77690877 has 16 divisors (see below), whose sum is σ = 113152512. Its totient is φ = 47023920.

The previous prime is 77690869. The next prime is 77690887. The reversal of 77690877 is 77809677.

It is not a de Polignac number, because 77690877 - 2³ = 77690869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77690857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46938 + ... + 48564.

It is an arithmetic number, because the mean of its divisors is an integer number (7072032).

Almost surely, 2^77690877 is an apocalyptic number.

It is an amenable number.

77690877 is a deficient number, since it is larger than the sum of its proper divisors (35461635).

77690877 is a wasteful number, since it uses less digits than its factorization.

77690877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088.

The product of its (nonzero) digits is 1037232, while the sum is 51.

The square root of 77690877 is about 8814.2428489349. The cubic root of 77690877 is about 426.7006862387.

The spelling of 77690877 in words is "seventy-seven million, six hundred ninety thousand, eight hundred seventy-seven".