64613263 has 12 divisors (see below), whose sum is σ = 76328568. Its totient is φ = 54219360.

The previous prime is 64613257. The next prime is 64613267. The reversal of 64613263 is 36231646.

It is a de Polignac number, because none of the positive numbers 2^k-64613263 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 (64613267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15520 + ... + 19237.

It is an arithmetic number, because the mean of its divisors is an integer number (6360714).

Almost surely, 2^64613263 is an apocalyptic number.

64613263 is a deficient number, since it is larger than the sum of its proper divisors (11715305).

64613263 is a wasteful number, since it uses less digits than its factorization.

64613263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34794 (or 34781 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 64613263 is about 8038.2375555839. The cubic root of 64613263 is about 401.2735719824.

The spelling of 64613263 in words is "sixty-four million, six hundred thirteen thousand, two hundred sixty-three".