79637 has 4 divisors (see below), whose sum is σ = 80556. Its totient is φ = 78720.

The previous prime is 79633. The next prime is 79657. The reversal of 79637 is 73697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73697 = 13 ⋅5669.

It can be written as a sum of positive squares in 2 ways, for example, as 28561 + 51076 = 169^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 79637 - 2² = 79633 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 (79631) 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, 314 + ... + 507.

It is an arithmetic number, because the mean of its divisors is an integer number (20139).

2⁷⁹⁶³⁷ is an apocalyptic number.

It is an amenable number.

79637 is a deficient number, since it is larger than the sum of its proper divisors (919).

79637 is an equidigital number, since it uses as much as digits as its factorization.

79637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its digits is 7938, while the sum is 32.

The square root of 79637 is about 282.2002834867. The cubic root of 79637 is about 43.0234233299.

The spelling of 79637 in words is "seventy-nine thousand, six hundred thirty-seven".