83814815 has 16 divisors (see below), whose sum is σ = 115714560. Its totient is φ = 57088800.

The previous prime is 83814803. The next prime is 83814817. The reversal of 83814815 is 51841838.

It is not a de Polignac number, because 83814815 - 2⁸ = 83814559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83814817) by changing a digit.

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, 2645 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (7232160).

Almost surely, 2^83814815 is an apocalyptic number.

83814815 is a deficient number, since it is larger than the sum of its proper divisors (31899745).

83814815 is a wasteful number, since it uses less digits than its factorization.

83814815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022.

The product of its digits is 30720, while the sum is 38.

The square root of 83814815 is about 9155.0431457203. The cubic root of 83814815 is about 437.6298433654.

The spelling of 83814815 in words is "eighty-three million, eight hundred fourteen thousand, eight hundred fifteen".