83684723 has 4 divisors (see below), whose sum is σ = 83715528. Its totient is φ = 83653920.

The previous prime is 83684701. The next prime is 83684729. The reversal of 83684723 is 32748638.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83684723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83684729) 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, 10886 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (20928882).

Almost surely, 2^83684723 is an apocalyptic number.

83684723 is a deficient number, since it is larger than the sum of its proper divisors (30805).

83684723 is a wasteful number, since it uses less digits than its factorization.

83684723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30804.

The product of its digits is 193536, while the sum is 41.

The square root of 83684723 is about 9147.9354501439. The cubic root of 83684723 is about 437.4033057599.

The spelling of 83684723 in words is "eighty-three million, six hundred eighty-four thousand, seven hundred twenty-three".