83696591 has 8 divisors (see below), whose sum is σ = 91386624. Its totient is φ = 76020120.

The previous prime is 83696551. The next prime is 83696597. The reversal of 83696591 is 19569638.

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

It is not a de Polignac number, because 83696591 - 2²² = 79502287 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 (83696597) 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, 12980 + ... + 18326.

It is an arithmetic number, because the mean of its divisors is an integer number (11423328).

Almost surely, 2^83696591 is an apocalyptic number.

83696591 is a deficient number, since it is larger than the sum of its proper divisors (7690033).

83696591 is a wasteful number, since it uses less digits than its factorization.

83696591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6781.

The product of its digits is 349920, while the sum is 47.

The square root of 83696591 is about 9148.5840980996. The cubic root of 83696591 is about 437.4239820031.

The spelling of 83696591 in words is "eighty-three million, six hundred ninety-six thousand, five hundred ninety-one".