82565913 has 8 divisors (see below), whose sum is σ = 110224000. Its totient is φ = 54975888.

The previous prime is 82565911. The next prime is 82565921. The reversal of 82565913 is 31956528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82565913 - 2¹ = 82565911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82565911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14113 + ... + 19086.

It is an arithmetic number, because the mean of its divisors is an integer number (13778000).

Almost surely, 2^82565913 is an apocalyptic number.

It is an amenable number.

82565913 is a deficient number, since it is larger than the sum of its proper divisors (27658087).

82565913 is a wasteful number, since it uses less digits than its factorization.

82565913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34031.

The product of its digits is 64800, while the sum is 39.

The square root of 82565913 is about 9086.5787290927. The cubic root of 82565913 is about 435.4452885082.

The spelling of 82565913 in words is "eighty-two million, five hundred sixty-five thousand, nine hundred thirteen".