64665160 has 64 divisors (see below), whose sum is σ = 167454720. Its totient is φ = 22014720.

The previous prime is 64665131. The next prime is 64665173. The reversal of 64665160 is 6156646.

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, 43225 + ... + 44695.

It is an arithmetic number, because the mean of its divisors is an integer number (2616480).

Almost surely, 2^64665160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64665160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83727360).

64665160 is an abundant number, since it is smaller than the sum of its proper divisors (102789560).

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

64665160 is a wasteful number, since it uses less digits than its factorization.

64665160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 64665160 is about 8041.4650406502. The cubic root of 64665160 is about 401.3809767711.

The spelling of 64665160 in words is "sixty-four million, six hundred sixty-five thousand, one hundred sixty".