774450644 has 24 divisors (see below), whose sum is σ = 1480071936. Its totient is φ = 351648000.

The previous prime is 774450637. The next prime is 774450661. The reversal of 774450644 is 446054477.

774450644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×774450644⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34724 + ... + 52484.

It is an arithmetic number, because the mean of its divisors is an integer number (61669664).

Almost surely, 2^774450644 is an apocalyptic number.

It is an amenable number.

774450644 is a deficient number, since it is larger than the sum of its proper divisors (705621292).

774450644 is a wasteful number, since it uses less digits than its factorization.

774450644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18767 (or 18765 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 41.

The square root of 774450644 is about 27828.9533400018. The cubic root of 774450644 is about 918.3281878523.

The spelling of 774450644 in words is "seven hundred seventy-four million, four hundred fifty thousand, six hundred forty-four".