774064440 has 96 divisors (see below), whose sum is σ = 2519384400. Its totient is φ = 206115840.

The previous prime is 774064439. The next prime is 774064463. The reversal of 774064440 is 44460477.

774064440 is a `hidden beast` number, since 7 + 7 + 4 + 0 + 644 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 774064395 and 774064404.

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 23 ways as a sum of consecutive naturals, for example, 362175 + ... + 364305.

Almost surely, 2^774064440 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 774064440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259692200).

774064440 is an abundant number, since it is smaller than the sum of its proper divisors (1745319960).

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

774064440 is a wasteful number, since it uses less digits than its factorization.

774064440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3150 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The square root of 774064440 is about 27822.0135863672. The cubic root of 774064440 is about 918.1755114603.

The spelling of 774064440 in words is "seven hundred seventy-four million, sixty-four thousand, four hundred forty".