64276961 has 8 divisors (see below), whose sum is σ = 73953600. Its totient is φ = 54723888.

The previous prime is 64276909. The next prime is 64276967. The reversal of 64276961 is 16967246.

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 64276961 - 2¹⁴ = 64260577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64276967) 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, 29771 + ... + 31856.

It is an arithmetic number, because the mean of its divisors is an integer number (9244200).

Almost surely, 2^64276961 is an apocalyptic number.

It is an amenable number.

64276961 is a deficient number, since it is larger than the sum of its proper divisors (9676639).

64276961 is a wasteful number, since it uses less digits than its factorization.

64276961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61783.

The product of its digits is 108864, while the sum is 41.

The square root of 64276961 is about 8017.2913755208. The cubic root of 64276961 is about 400.5761717501.

The spelling of 64276961 in words is "sixty-four million, two hundred seventy-six thousand, nine hundred sixty-one".