64914521 has 8 divisors (see below), whose sum is σ = 75997824. Its totient is φ = 54283680.

The previous prime is 64914511. The next prime is 64914523. The reversal of 64914521 is 12541946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64914521 - 2⁶ = 64914457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64914523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112805 + ... + 113378.

It is an arithmetic number, because the mean of its divisors is an integer number (9499728).

Almost surely, 2^64914521 is an apocalyptic number.

It is an amenable number.

64914521 is a deficient number, since it is larger than the sum of its proper divisors (11083303).

64914521 is a wasteful number, since it uses less digits than its factorization.

64914521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226231.

The product of its digits is 8640, while the sum is 32.

The square root of 64914521 is about 8056.9548217673. The cubic root of 64914521 is about 401.8962484825.

The spelling of 64914521 in words is "sixty-four million, nine hundred fourteen thousand, five hundred twenty-one".