77136508 has 12 divisors (see below), whose sum is σ = 135053352. Its totient is φ = 38549840.

The previous prime is 77136487. The next prime is 77136509. The reversal of 77136508 is 80563177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77136509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9891 + ... + 15877.

It is an arithmetic number, because the mean of its divisors is an integer number (11254446).

Almost surely, 2^77136508 is an apocalyptic number.

It is an amenable number.

77136508 is a deficient number, since it is larger than the sum of its proper divisors (57916844).

77136508 is a wasteful number, since it uses less digits than its factorization.

77136508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212 (or 9210 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 77136508 is about 8782.7392082425. The cubic root of 77136508 is about 425.6833445117.

The spelling of 77136508 in words is "seventy-seven million, one hundred thirty-six thousand, five hundred eight".