83215887 has 8 divisors (see below), whose sum is σ = 111006336. Its totient is φ = 55451352.

The previous prime is 83215859. The next prime is 83215889. The reversal of 83215887 is 78851238.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83215887 - 2⁶ = 83215823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83215889) 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, 2998 + ... + 13244.

It is an arithmetic number, because the mean of its divisors is an integer number (13875792).

Almost surely, 2^83215887 is an apocalyptic number.

83215887 is a deficient number, since it is larger than the sum of its proper divisors (27790449).

83215887 is a wasteful number, since it uses less digits than its factorization.

83215887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957.

The product of its digits is 107520, while the sum is 42.

The square root of 83215887 is about 9122.2742230214. The cubic root of 83215887 is about 436.5849382488.

The spelling of 83215887 in words is "eighty-three million, two hundred fifteen thousand, eight hundred eighty-seven".