83680515 has 24 divisors (see below), whose sum is σ = 150050160. Its totient is φ = 43089984.

The previous prime is 83680489. The next prime is 83680543. The reversal of 83680515 is 51508638.

83680515 is a `hidden beast` number, since 83 + 68 + 0 + 515 = 666.

It is not a de Polignac number, because 83680515 - 2⁵ = 83680483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83680515.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30757 + ... + 33366.

It is an arithmetic number, because the mean of its divisors is an integer number (6252090).

Almost surely, 2^83680515 is an apocalyptic number.

83680515 is a deficient number, since it is larger than the sum of its proper divisors (66369645).

83680515 is a wasteful number, since it uses less digits than its factorization.

83680515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64163 (or 64160 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 83680515 is about 9147.7054500022. The cubic root of 83680515 is about 437.3959741790.

The spelling of 83680515 in words is "eighty-three million, six hundred eighty thousand, five hundred fifteen".