82509607 has 4 divisors (see below), whose sum is σ = 82533240. Its totient is φ = 82485976.

The previous prime is 82509601. The next prime is 82509613. The reversal of 82509607 is 70690528.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (82509601) and next prime (82509613).

It is a cyclic number.

It is not a de Polignac number, because 82509607 - 2³ = 82509599 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 (82509601) 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, 5428 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (20633310).

Almost surely, 2^82509607 is an apocalyptic number.

82509607 is a deficient number, since it is larger than the sum of its proper divisors (23633).

82509607 is a wasteful number, since it uses less digits than its factorization.

82509607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23632.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 82509607 is about 9083.4798948421. The cubic root of 82509607 is about 435.3462817186.

The spelling of 82509607 in words is "eighty-two million, five hundred nine thousand, six hundred seven".