64507263 has 8 divisors (see below), whose sum is σ = 87221376. Its totient is φ = 42399000.

The previous prime is 64507241. The next prime is 64507273. The reversal of 64507263 is 36270546.

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

It is not a de Polignac number, because 64507263 - 2⁶ = 64507199 is a prime.

It is a super-2 number, since 2×64507263² = 8322373959502338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64507273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151213 + ... + 151638.

It is an arithmetic number, because the mean of its divisors is an integer number (10902672).

Almost surely, 2^64507263 is an apocalyptic number.

64507263 is a deficient number, since it is larger than the sum of its proper divisors (22714113).

64507263 is a wasteful number, since it uses less digits than its factorization.

64507263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302925.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 64507263 is about 8031.6413640052. The cubic root of 64507263 is about 401.0540180918.

The spelling of 64507263 in words is "sixty-four million, five hundred seven thousand, two hundred sixty-three".