77470672 has 20 divisors (see below), whose sum is σ = 150297796. Its totient is φ = 38684160.

The previous prime is 77470669. The next prime is 77470681. The reversal of 77470672 is 27607477.

It can be written as a sum of positive squares in 2 ways, for example, as 44568976 + 32901696 = 6676^2 + 5736^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11272 + ... + 16792.

Almost surely, 2^77470672 is an apocalyptic number.

It is an amenable number.

77470672 is a deficient number, since it is larger than the sum of its proper divisors (72827124).

77470672 is a wasteful number, since it uses less digits than its factorization.

77470672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406 (or 6400 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 77470672 is about 8801.7425547445. The cubic root of 77470672 is about 426.2971616447.

The spelling of 77470672 in words is "seventy-seven million, four hundred seventy thousand, six hundred seventy-two".