83864590 has 16 divisors (see below), whose sum is σ = 153025488. Its totient is φ = 33086016.

The previous prime is 83864581. The next prime is 83864593. The reversal of 83864590 is 9546838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83864593) 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, 56712 + ... + 58171.

It is an arithmetic number, because the mean of its divisors is an integer number (9564093).

Almost surely, 2^83864590 is an apocalyptic number.

83864590 is a deficient number, since it is larger than the sum of its proper divisors (69160898).

83864590 is a wasteful number, since it uses less digits than its factorization.

83864590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114963.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 83864590 is about 9157.7611892864. The cubic root of 83864590 is about 437.7164577855.

The spelling of 83864590 in words is "eighty-three million, eight hundred sixty-four thousand, five hundred ninety".