64751963 has 8 divisors (see below), whose sum is σ = 70773120. Its totient is φ = 58976640.

The previous prime is 64751959. The next prime is 64751987. The reversal of 64751963 is 36915746.

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 64751963 - 2² = 64751959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64751963.

It is not an unprimeable number, because it can be changed into a prime (64751993) 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, 60908 + ... + 61961.

It is an arithmetic number, because the mean of its divisors is an integer number (8846640).

Almost surely, 2^64751963 is an apocalyptic number.

64751963 is a deficient number, since it is larger than the sum of its proper divisors (6021157).

64751963 is a wasteful number, since it uses less digits than its factorization.

64751963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122917.

The product of its digits is 136080, while the sum is 41.

The square root of 64751963 is about 8046.8604436762. The cubic root of 64751963 is about 401.5604938143.

The spelling of 64751963 in words is "sixty-four million, seven hundred fifty-one thousand, nine hundred sixty-three".