82504661 has 4 divisors (see below), whose sum is σ = 83154432. Its totient is φ = 81854892.

The previous prime is 82504651. The next prime is 82504699. The reversal of 82504661 is 16640528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82504661 - 2²² = 78310357 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 (82504651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324695 + ... + 324948.

It is an arithmetic number, because the mean of its divisors is an integer number (20788608).

Almost surely, 2^82504661 is an apocalyptic number.

It is an amenable number.

82504661 is a deficient number, since it is larger than the sum of its proper divisors (649771).

82504661 is a wasteful number, since it uses less digits than its factorization.

82504661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649770.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 82504661 is about 9083.2076382740. The cubic root of 82504661 is about 435.3375826680.

The spelling of 82504661 in words is "eighty-two million, five hundred four thousand, six hundred sixty-one".