82572609 has 16 divisors (see below), whose sum is σ = 127705088. Its totient is φ = 46479312.

The previous prime is 82572593. The next prime is 82572619. The reversal of 82572609 is 90627528.

It is a happy number.

It is not a de Polignac number, because 82572609 - 2⁴ = 82572593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82572619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27937 + ... + 30750.

It is an arithmetic number, because the mean of its divisors is an integer number (7981568).

Almost surely, 2^82572609 is an apocalyptic number.

It is an amenable number.

82572609 is a deficient number, since it is larger than the sum of its proper divisors (45132479).

82572609 is a wasteful number, since it uses less digits than its factorization.

82572609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58764.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 82572609 is about 9086.9471771327. The cubic root of 82572609 is about 435.4570595597.

The spelling of 82572609 in words is "eighty-two million, five hundred seventy-two thousand, six hundred nine".