64957263 has 8 divisors (see below), whose sum is σ = 98982528. Its totient is φ = 37118424.

The previous prime is 64957247. The next prime is 64957271. The reversal of 64957263 is 36275946.

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

It is not a de Polignac number, because 64957263 - 2⁴ = 64957247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64957223) 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, 1546581 + ... + 1546622.

It is an arithmetic number, because the mean of its divisors is an integer number (12372816).

Almost surely, 2^64957263 is an apocalyptic number.

64957263 is a deficient number, since it is larger than the sum of its proper divisors (34025265).

64957263 is a wasteful number, since it uses less digits than its factorization.

64957263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093213.

The product of its digits is 272160, while the sum is 42.

The square root of 64957263 is about 8059.6068762688. The cubic root of 64957263 is about 401.9844366639.

The spelling of 64957263 in words is "sixty-four million, nine hundred fifty-seven thousand, two hundred sixty-three".