771870672 has 30 divisors (see below), whose sum is σ = 2160166242. Its totient is φ = 257290176.

The previous prime is 771870577. The next prime is 771870709. The reversal of 771870672 is 276078177.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 763085376 + 8785296 = 27624^2 + 2964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2679963 + ... + 2680250.

Almost surely, 2^771870672 is an apocalyptic number.

771870672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

771870672 is an abundant number, since it is smaller than the sum of its proper divisors (1388295570).

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

771870672 is a wasteful number, since it uses less digits than its factorization.

771870672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360227 (or 5360218 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 45.

The square root of 771870672 is about 27782.5605731365. The cubic root of 771870672 is about 917.3072935096.

The spelling of 771870672 in words is "seven hundred seventy-one million, eight hundred seventy thousand, six hundred seventy-two".