786641472 has 84 divisors (see below), whose sum is σ = 2332565820. Its totient is φ = 253166592.

The previous prime is 786641467. The next prime is 786641483. The reversal of 786641472 is 274146687.

It can be written as a sum of positive squares in 2 ways, for example, as 673091136 + 113550336 = 25944^2 + 10656^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6843 + ... + 40250.

Almost surely, 2^786641472 is an apocalyptic number.

786641472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 786641472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166282910).

786641472 is an abundant number, since it is smaller than the sum of its proper divisors (1545924348).

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

786641472 is a wasteful number, since it uses less digits than its factorization.

786641472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47140 (or 47127 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 786641472 is about 28047.1294787898. The cubic root of 786641472 is about 923.1216705487.

The spelling of 786641472 in words is "seven hundred eighty-six million, six hundred forty-one thousand, four hundred seventy-two".