83615081 has 4 divisors (see below), whose sum is σ = 91216464. Its totient is φ = 76013700.

The previous prime is 83615047. The next prime is 83615083. The reversal of 83615081 is 18051638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83615081 - 2²² = 79420777 is a prime.

It is a super-2 number, since 2×83615081² = 13982963541273122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83615083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800675 + ... + 3800696.

It is an arithmetic number, because the mean of its divisors is an integer number (22804116).

Almost surely, 2^83615081 is an apocalyptic number.

It is an amenable number.

83615081 is a deficient number, since it is larger than the sum of its proper divisors (7601383).

83615081 is a wasteful number, since it uses less digits than its factorization.

83615081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601382.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 83615081 is about 9144.1282252602. The cubic root of 83615081 is about 437.2819371523.

The spelling of 83615081 in words is "eighty-three million, six hundred fifteen thousand, eighty-one".