83887564 has 12 divisors (see below), whose sum is σ = 147960064. Its totient is φ = 41613264.

The previous prime is 83887561. The next prime is 83887577. The reversal of 83887564 is 46578838.

It is not an unprimeable number, because it can be changed into a prime (83887561) 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, 82059 + ... + 83074.

Almost surely, 2^83887564 is an apocalyptic number.

It is an amenable number.

83887564 is a deficient number, since it is larger than the sum of its proper divisors (64072500).

83887564 is a wasteful number, since it uses less digits than its factorization.

83887564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165264 (or 165262 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 83887564 is about 9159.0154492718. The cubic root of 83887564 is about 437.7564237186.

The spelling of 83887564 in words is "eighty-three million, eight hundred eighty-seven thousand, five hundred sixty-four".