64665460 has 24 divisors (see below), whose sum is σ = 137120256. Its totient is φ = 25614240.

The previous prime is 64665457. The next prime is 64665481. The reversal of 64665460 is 6456646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13636 + ... + 17755.

It is an arithmetic number, because the mean of its divisors is an integer number (5713344).

Almost surely, 2^64665460 is an apocalyptic number.

It is an amenable number.

64665460 is an abundant number, since it is smaller than the sum of its proper divisors (72454796).

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

64665460 is a wasteful number, since it uses less digits than its factorization.

64665460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31503 (or 31501 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 64665460 is about 8041.4836939460. The cubic root of 64665460 is about 401.3815974768.

The spelling of 64665460 in words is "sixty-four million, six hundred sixty-five thousand, four hundred sixty".