83872605 has 16 divisors (see below), whose sum is σ = 140031360. Its totient is φ = 42787008.

The previous prime is 83872597. The next prime is 83872627. The reversal of 83872605 is 50627838.

It is not a de Polignac number, because 83872605 - 2³ = 83872597 is a prime.

It is a super-2 number, since 2×83872605² = 14069227738972050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121210 + ... + 121899.

It is an arithmetic number, because the mean of its divisors is an integer number (8751960).

Almost surely, 2^83872605 is an apocalyptic number.

It is an amenable number.

83872605 is a deficient number, since it is larger than the sum of its proper divisors (56158755).

83872605 is a wasteful number, since it uses less digits than its factorization.

83872605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243140.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 83872605 is about 9158.1987857875. The cubic root of 83872605 is about 437.7304016350.

The spelling of 83872605 in words is "eighty-three million, eight hundred seventy-two thousand, six hundred five".