64993065 has 8 divisors (see below), whose sum is σ = 103988928. Its totient is φ = 34662960.

The previous prime is 64993039. The next prime is 64993087. The reversal of 64993065 is 56039946.

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

It is not a de Polignac number, because 64993065 - 2⁹ = 64992553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2166421 + ... + 2166450.

It is an arithmetic number, because the mean of its divisors is an integer number (12998616).

Almost surely, 2^64993065 is an apocalyptic number.

It is an amenable number.

64993065 is a deficient number, since it is larger than the sum of its proper divisors (38995863).

64993065 is a wasteful number, since it uses less digits than its factorization.

64993065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332879.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 64993065 is about 8061.8276463839. The cubic root of 64993065 is about 402.0582760000.

The spelling of 64993065 in words is "sixty-four million, nine hundred ninety-three thousand, sixty-five".