64536876 has 18 divisors (see below), whose sum is σ = 163134972. Its totient is φ = 21512280.

The previous prime is 64536809. The next prime is 64536877. The reversal of 64536876 is 67863546.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64536877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 896310 + ... + 896381.

It is an arithmetic number, because the mean of its divisors is an integer number (9063054).

Almost surely, 2^64536876 is an apocalyptic number.

It is an amenable number.

64536876 is an abundant number, since it is smaller than the sum of its proper divisors (98598096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64536876 is a wasteful number, since it uses less digits than its factorization.

64536876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792701 (or 1792696 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 64536876 is about 8033.4846735399. The cubic root of 64536876 is about 401.1153786022.

The spelling of 64536876 in words is "sixty-four million, five hundred thirty-six thousand, eight hundred seventy-six".