77699423 has 8 divisors (see below), whose sum is σ = 81223680. Its totient is φ = 74238840.

The previous prime is 77699411. The next prime is 77699437. The reversal of 77699423 is 32499677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77699423 - 2⁴ = 77699407 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 (77699473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13415 + ... + 18312.

It is an arithmetic number, because the mean of its divisors is an integer number (10152960).

Almost surely, 2^77699423 is an apocalyptic number.

77699423 is a deficient number, since it is larger than the sum of its proper divisors (3524257).

77699423 is a wasteful number, since it uses less digits than its factorization.

77699423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31837.

The product of its digits is 571536, while the sum is 47.

The square root of 77699423 is about 8814.7276191610. The cubic root of 77699423 is about 426.7163313634.

The spelling of 77699423 in words is "seventy-seven million, six hundred ninety-nine thousand, four hundred twenty-three".