64520118 has 32 divisors (see below), whose sum is σ = 154408800. Its totient is φ = 19852128.

The previous prime is 64520069. The next prime is 64520123. The reversal of 64520118 is 81102546.

64520118 is a `hidden beast` number, since 645 + 2 + 0 + 1 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 64520091 and 64520100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45253 + ... + 46656.

It is an arithmetic number, because the mean of its divisors is an integer number (4825275).

Almost surely, 2^64520118 is an apocalyptic number.

64520118 is an abundant number, since it is smaller than the sum of its proper divisors (89888682).

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

64520118 is a wasteful number, since it uses less digits than its factorization.

64520118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91933 (or 91927 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 64520118 is about 8032.4415964263. The cubic root of 64520118 is about 401.0806569887.

The spelling of 64520118 in words is "sixty-four million, five hundred twenty thousand, one hundred eighteen".