77012636 has 12 divisors (see below), whose sum is σ = 134834112. Its totient is φ = 38488608.

The previous prime is 77012633. The next prime is 77012647. The reversal of 77012636 is 63621077.

It is a super-2 number, since 2×77012636² = 11861892207336992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77012633) 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, 12821 + ... + 17843.

It is an arithmetic number, because the mean of its divisors is an integer number (11236176).

Almost surely, 2^77012636 is an apocalyptic number.

It is an amenable number.

77012636 is a deficient number, since it is larger than the sum of its proper divisors (57821476).

77012636 is a wasteful number, since it uses less digits than its factorization.

77012636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860 (or 8858 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 77012636 is about 8775.6843607778. The cubic root of 77012636 is about 425.4553569263.

The spelling of 77012636 in words is "seventy-seven million, twelve thousand, six hundred thirty-six".