771006672 has 30 divisors (see below), whose sum is σ = 2157748242. Its totient is φ = 257002176.

The previous prime is 771006637. The next prime is 771006683. The reversal of 771006672 is 276600177.

It can be written as a sum of positive squares in only one way, i.e., 749883456 + 21123216 = 27384^2 + 4596^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 2676963 + ... + 2677250.

Almost surely, 2^771006672 is an apocalyptic number.

771006672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

771006672 is an abundant number, since it is smaller than the sum of its proper divisors (1386741570).

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

771006672 is a wasteful number, since it uses less digits than its factorization.

771006672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354227 (or 5354218 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 771006672 is about 27767.0068966751. The cubic root of 771006672 is about 916.9649004846.

The spelling of 771006672 in words is "seven hundred seventy-one million, six thousand, six hundred seventy-two".