82616013 has 6 divisors (see below), whose sum is σ = 119334254. Its totient is φ = 55077336.

The previous prime is 82615999. The next prime is 82616033. The reversal of 82616013 is 31061628.

It can be written as a sum of positive squares in only one way, i.e., 74338884 + 8277129 = 8622^2 + 2877^2 .

It is not a de Polignac number, because 82616013 - 2⁴ = 82615997 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 (82616033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4589770 + ... + 4589787.

Almost surely, 2^82616013 is an apocalyptic number.

It is an amenable number.

82616013 is a deficient number, since it is larger than the sum of its proper divisors (36718241).

82616013 is a wasteful number, since it uses less digits than its factorization.

82616013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9179563 (or 9179560 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 82616013 is about 9089.3351241991. The cubic root of 82616013 is about 435.5333450161.

The spelling of 82616013 in words is "eighty-two million, six hundred sixteen thousand, thirteen".