83707813 has 16 divisors (see below), whose sum is σ = 101761920. Its totient is φ = 67216896.

The previous prime is 83707769. The next prime is 83707823. The reversal of 83707813 is 31870738.

It is a cyclic number.

It is not a de Polignac number, because 83707813 - 2¹⁷ = 83576741 is a prime.

It is a super-3 number, since 3×83707813³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83707823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26218 + ... + 29236.

It is an arithmetic number, because the mean of its divisors is an integer number (6360120).

Almost surely, 2^83707813 is an apocalyptic number.

It is an amenable number.

83707813 is a deficient number, since it is larger than the sum of its proper divisors (18054107).

83707813 is a wasteful number, since it uses less digits than its factorization.

83707813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 83707813 is about 9149.1973964933. The cubic root of 83707813 is about 437.4435309975.

The spelling of 83707813 in words is "eighty-three million, seven hundred seven thousand, eight hundred thirteen".