82156613 has 16 divisors (see below), whose sum is σ = 105201024. Its totient is φ = 62285760.

The previous prime is 82156561. The next prime is 82156619. The reversal of 82156613 is 31665128.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82156613 - 2⁸ = 82156357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82156613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82156619) 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 15 ways as a sum of consecutive naturals, for example, 11570 + ... + 17267.

It is an arithmetic number, because the mean of its divisors is an integer number (6575064).

Almost surely, 2^82156613 is an apocalyptic number.

It is an amenable number.

82156613 is a deficient number, since it is larger than the sum of its proper divisors (23044411).

82156613 is a wasteful number, since it uses less digits than its factorization.

82156613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28892.

The product of its digits is 8640, while the sum is 32.

The square root of 82156613 is about 9064.0285193726. The cubic root of 82156613 is about 434.7245589703.

The spelling of 82156613 in words is "eighty-two million, one hundred fifty-six thousand, six hundred thirteen".