77064738 has 16 divisors (see below), whose sum is σ = 156742560. Its totient is φ = 25252736.

The previous prime is 77064733. The next prime is 77064739. The reversal of 77064738 is 83746077.

It is a self number, because there is not a number n which added to its sum of digits gives 77064738.

It is not an unprimeable number, because it can be changed into a prime (77064731) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108495 + ... + 109202.

It is an arithmetic number, because the mean of its divisors is an integer number (9796410).

Almost surely, 2^77064738 is an apocalyptic number.

77064738 is an abundant number, since it is smaller than the sum of its proper divisors (79677822).

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

77064738 is a wasteful number, since it uses less digits than its factorization.

77064738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217761.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 77064738 is about 8778.6524022768. The cubic root of 77064738 is about 425.5512809160.

The spelling of 77064738 in words is "seventy-seven million, sixty-four thousand, seven hundred thirty-eight".