83656723 has 4 divisors (see below), whose sum is σ = 83793808. Its totient is φ = 83519640.

The previous prime is 83656717. The next prime is 83656751. The reversal of 83656723 is 32765638.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32765638 = 2 ⋅16382819.

It is a cyclic number.

It is not a de Polignac number, because 83656723 - 2⁵ = 83656691 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83656763) 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, 67623 + ... + 68848.

It is an arithmetic number, because the mean of its divisors is an integer number (20948452).

Almost surely, 2^83656723 is an apocalyptic number.

83656723 is a deficient number, since it is larger than the sum of its proper divisors (137085).

83656723 is a wasteful number, since it uses less digits than its factorization.

83656723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137084.

The product of its digits is 181440, while the sum is 40.

The square root of 83656723 is about 9146.4049221538. The cubic root of 83656723 is about 437.3545168519.

The spelling of 83656723 in words is "eighty-three million, six hundred fifty-six thousand, seven hundred twenty-three".