77690135 has 4 divisors (see below), whose sum is σ = 93228168. Its totient is φ = 62152104.

The previous prime is 77690131. The next prime is 77690143. The reversal of 77690135 is 53109677.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77690135 - 2² = 77690131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77690131) 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 3 ways as a sum of consecutive naturals, for example, 7769009 + ... + 7769018.

It is an arithmetic number, because the mean of its divisors is an integer number (23307042).

Almost surely, 2^77690135 is an apocalyptic number.

77690135 is a deficient number, since it is larger than the sum of its proper divisors (15538033).

77690135 is a wasteful number, since it uses less digits than its factorization.

77690135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15538032.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 77690135 is about 8814.2007578680. The cubic root of 77690135 is about 426.6993278084.

The spelling of 77690135 in words is "seventy-seven million, six hundred ninety thousand, one hundred thirty-five".