64972063 has 8 divisors (see below), whose sum is σ = 72227456. Its totient is φ = 58039200.

The previous prime is 64972031. The next prime is 64972067. The reversal of 64972063 is 36027946.

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 64972063 - 2⁵ = 64972031 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 (64972067) 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, 80208 + ... + 81013.

It is an arithmetic number, because the mean of its divisors is an integer number (9028432).

Almost surely, 2^64972063 is an apocalyptic number.

64972063 is a deficient number, since it is larger than the sum of its proper divisors (7255393).

64972063 is a wasteful number, since it uses less digits than its factorization.

64972063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161265.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 64972063 is about 8060.5249829028. The cubic root of 64972063 is about 402.0149640066.

The spelling of 64972063 in words is "sixty-four million, nine hundred seventy-two thousand, sixty-three".