83656623 has 4 divisors (see below), whose sum is σ = 111542168. Its totient is φ = 55771080.

The previous prime is 83656621. The next prime is 83656627. The reversal of 83656623 is 32665638.

It is a happy number.

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

It is not a de Polignac number, because 83656623 - 2¹ = 83656621 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 (83656621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13942768 + ... + 13942773.

It is an arithmetic number, because the mean of its divisors is an integer number (27885542).

Almost surely, 2^83656623 is an apocalyptic number.

83656623 is a deficient number, since it is larger than the sum of its proper divisors (27885545).

83656623 is a wasteful number, since it uses less digits than its factorization.

83656623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27885544.

The product of its digits is 155520, while the sum is 39.

The square root of 83656623 is about 9146.3994555235. The cubic root of 83656623 is about 437.3543425863.

The spelling of 83656623 in words is "eighty-three million, six hundred fifty-six thousand, six hundred twenty-three".