83690115 has 32 divisors (see below), whose sum is σ = 138977856. Its totient is φ = 42969600.

The previous prime is 83690107. The next prime is 83690119. The reversal of 83690115 is 51109638.

It is not a de Polignac number, because 83690115 - 2³ = 83690107 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (83690119) 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, 55309 + ... + 56801.

It is an arithmetic number, because the mean of its divisors is an integer number (4343058).

Almost surely, 2^83690115 is an apocalyptic number.

83690115 is a deficient number, since it is larger than the sum of its proper divisors (55287741).

83690115 is a wasteful number, since it uses less digits than its factorization.

83690115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 83690115 is about 9148.2301567024. The cubic root of 83690115 is about 437.4126998599.

It can be divided in two parts, 836 and 90115, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 83690115 in words is "eighty-three million, six hundred ninety thousand, one hundred fifteen".