774664 has 16 divisors (see below), whose sum is σ = 1584720. Its totient is φ = 352080.

The previous prime is 774661. The next prime is 774667. The reversal of 774664 is 466477.

It is an interprime number because it is at equal distance from previous prime (774661) and next prime (774667).

It is not an unprimeable number, because it can be changed into a prime (774661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4314 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (99045).

2⁷⁷⁴⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

774664 is an abundant number, since it is smaller than the sum of its proper divisors (810056).

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

774664 is a wasteful number, since it uses less digits than its factorization.

774664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8820 (or 8816 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 774664 is about 880.1499872181. The cubic root of 774664 is about 91.8412511211.

It can be divided in two parts, 77 and 4664, that multiplied together give a triangular number (359128 = T₈₄₇).

The spelling of 774664 in words is "seven hundred seventy-four thousand, six hundred sixty-four".