64663901 has 8 divisors (see below), whose sum is σ = 66712800. Its totient is φ = 62630928.

The previous prime is 64663891. The next prime is 64663927. The reversal of 64663901 is 10936646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64663901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64693901) 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, 4550 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (8339100).

Almost surely, 2^64663901 is an apocalyptic number.

It is an amenable number.

64663901 is a deficient number, since it is larger than the sum of its proper divisors (2048899).

64663901 is a wasteful number, since it uses less digits than its factorization.

64663901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 64663901 is about 8041.3867585137. The cubic root of 64663901 is about 401.3783718551.

The spelling of 64663901 in words is "sixty-four million, six hundred sixty-three thousand, nine hundred one".