83631137 has 4 divisors (see below), whose sum is σ = 85891476. Its totient is φ = 81370800.

The previous prime is 83631083. The next prime is 83631161. The reversal of 83631137 is 73113638.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52983841 + 30647296 = 7279^2 + 5536^2 .

It is a cyclic number.

It is not a de Polignac number, because 83631137 - 2⁶ = 83631073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83631637) 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, 1130114 + ... + 1130187.

It is an arithmetic number, because the mean of its divisors is an integer number (21472869).

Almost surely, 2^83631137 is an apocalyptic number.

It is an amenable number.

83631137 is a deficient number, since it is larger than the sum of its proper divisors (2260339).

83631137 is a wasteful number, since it uses less digits than its factorization.

83631137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260338.

The product of its digits is 9072, while the sum is 32.

The square root of 83631137 is about 9145.0061235627. The cubic root of 83631137 is about 437.3099247248.

The spelling of 83631137 in words is "eighty-three million, six hundred thirty-one thousand, one hundred thirty-seven".