77136490 has 32 divisors (see below), whose sum is σ = 143585280. Its totient is φ = 29813184.

The previous prime is 77136487. The next prime is 77136509. The reversal of 77136490 is 9463177.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59671 + ... + 60949.

It is an arithmetic number, because the mean of its divisors is an integer number (4487040).

Almost surely, 2^77136490 is an apocalyptic number.

77136490 is a deficient number, since it is larger than the sum of its proper divisors (66448790).

77136490 is a wasteful number, since it uses less digits than its factorization.

77136490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 77136490 is about 8782.7381835052. The cubic root of 77136490 is about 425.6833114002.

The spelling of 77136490 in words is "seventy-seven million, one hundred thirty-six thousand, four hundred ninety".