774220645 has 32 divisors (see below), whose sum is σ = 1073088000. Its totient is φ = 530326080.

The previous prime is 774220637. The next prime is 774220673. The reversal of 774220645 is 546022477.

It is not a de Polignac number, because 774220645 - 2³ = 774220637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184986 + ... + 189124.

It is an arithmetic number, because the mean of its divisors is an integer number (33534000).

Almost surely, 2^774220645 is an apocalyptic number.

It is an amenable number.

774220645 is a deficient number, since it is larger than the sum of its proper divisors (298867355).

774220645 is a wasteful number, since it uses less digits than its factorization.

774220645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4353.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 774220645 is about 27824.8206642918. The cubic root of 774220645 is about 918.2372694363.

The spelling of 774220645 in words is "seven hundred seventy-four million, two hundred twenty thousand, six hundred forty-five".