785974356 has 72 divisors (see below), whose sum is σ = 2083634280. Its totient is φ = 249467904.

The previous prime is 785974351. The next prime is 785974381. The reversal of 785974356 is 653479587.

785974356 is a `hidden beast` number, since 7 + 8 + 597 + 43 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 115992900 + 669981456 = 10770^2 + 25884^2 .

It is a super-2 number, since 2×785974356² = 1235511376579229472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785974351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71056 + ... + 81368.

It is an arithmetic number, because the mean of its divisors is an integer number (28939365).

Almost surely, 2^785974356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 785974356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041817140).

785974356 is an abundant number, since it is smaller than the sum of its proper divisors (1297659924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

785974356 is a wasteful number, since it uses less digits than its factorization.

785974356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10425 (or 10420 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 785974356 is about 28035.2341884280. The cubic root of 785974356 is about 922.8606437971.

It can be divided in two parts, 7859 and 74356, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 785974356 in words is "seven hundred eighty-five million, nine hundred seventy-four thousand, three hundred fifty-six".