79615 has 4 divisors (see below), whose sum is σ = 95544. Its totient is φ = 63688.

The previous prime is 79613. The next prime is 79621. The reversal of 79615 is 51697.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51697 = 17 ⋅3041.

It is a cyclic number.

It is not a de Polignac number, because 79615 - 2¹ = 79613 is a prime.

It is a Duffinian number.

79615 is a lucky number.

It is a plaindrome in base 8 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7957 + ... + 7966.

It is an arithmetic number, because the mean of its divisors is an integer number (23886).

2⁷⁹⁶¹⁵ is an apocalyptic number.

79615 is a deficient number, since it is larger than the sum of its proper divisors (15929).

79615 is a wasteful number, since it uses less digits than its factorization.

79615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928.

The product of its digits is 1890, while the sum is 28.

The square root of 79615 is about 282.1613013863. The cubic root of 79615 is about 43.0194611746.

The spelling of 79615 in words is "seventy-nine thousand, six hundred fifteen".