77618036 has 12 divisors (see below), whose sum is σ = 140515620. Its totient is φ = 37470720.

The previous prime is 77618029. The next prime is 77618041. The reversal of 77618036 is 63081677.

It can be written as a sum of positive squares in 2 ways, for example, as 41088100 + 36529936 = 6410^2 + 6044^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334445 + ... + 334676.

It is an arithmetic number, because the mean of its divisors is an integer number (11709635).

Almost surely, 2^77618036 is an apocalyptic number.

It is an amenable number.

77618036 is a deficient number, since it is larger than the sum of its proper divisors (62897584).

77618036 is a wasteful number, since it uses less digits than its factorization.

77618036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669154 (or 669152 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 77618036 is about 8810.1098744567. The cubic root of 77618036 is about 426.5672899523.

The spelling of 77618036 in words is "seventy-seven million, six hundred eighteen thousand, thirty-six".