774868628 has 6 divisors (see below), whose sum is σ = 1356020106. Its totient is φ = 387434312.

The previous prime is 774868607. The next prime is 774868637. The reversal of 774868628 is 826868477.

It can be written as a sum of positive squares in only one way, i.e., 608510224 + 166358404 = 24668^2 + 12898^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96858575 + ... + 96858582.

It is an arithmetic number, because the mean of its divisors is an integer number (226003351).

Almost surely, 2^774868628 is an apocalyptic number.

It is an amenable number.

774868628 is a deficient number, since it is larger than the sum of its proper divisors (581151478).

774868628 is a wasteful number, since it uses less digits than its factorization.

774868628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193717161 (or 193717159 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 56.

The square root of 774868628 is about 27836.4622033763. The cubic root of 774868628 is about 918.4933705130.

The spelling of 774868628 in words is "seven hundred seventy-four million, eight hundred sixty-eight thousand, six hundred twenty-eight".