83706913 has 32 divisors (see below), whose sum is σ = 98058240. Its totient is φ = 70994880.

The previous prime is 83706901. The next prime is 83706923. The reversal of 83706913 is 31960738.

It is a cyclic number.

It is not a de Polignac number, because 83706913 - 2¹³ = 83698721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (83706923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 501156 + ... + 501322.

It is an arithmetic number, because the mean of its divisors is an integer number (3064320).

Almost surely, 2^83706913 is an apocalyptic number.

It is an amenable number.

83706913 is a deficient number, since it is larger than the sum of its proper divisors (14351327).

83706913 is a wasteful number, since it uses less digits than its factorization.

83706913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 83706913 is about 9149.1482117189. The cubic root of 83706913 is about 437.4419632402.

The spelling of 83706913 in words is "eighty-three million, seven hundred six thousand, nine hundred thirteen".