77616723 has 4 divisors (see below), whose sum is σ = 103488968. Its totient is φ = 51744480.

The previous prime is 77616719. The next prime is 77616733. The reversal of 77616723 is 32761677.

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

It is not a de Polignac number, because 77616723 - 2² = 77616719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77616733) 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, 12936118 + ... + 12936123.

It is an arithmetic number, because the mean of its divisors is an integer number (25872242).

Almost surely, 2^77616723 is an apocalyptic number.

77616723 is a deficient number, since it is larger than the sum of its proper divisors (25872245).

77616723 is a wasteful number, since it uses less digits than its factorization.

77616723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25872244.

The product of its digits is 74088, while the sum is 39.

The square root of 77616723 is about 8810.0353574773. The cubic root of 77616723 is about 426.5648846436.

The spelling of 77616723 in words is "seventy-seven million, six hundred sixteen thousand, seven hundred twenty-three".