64423263 has 4 divisors (see below), whose sum is σ = 85897688. Its totient is φ = 42948840.

The previous prime is 64423241. The next prime is 64423267. The reversal of 64423263 is 36232446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-64423263 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 64423263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64423267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10737208 + ... + 10737213.

It is an arithmetic number, because the mean of its divisors is an integer number (21474422).

Almost surely, 2^64423263 is an apocalyptic number.

64423263 is a deficient number, since it is larger than the sum of its proper divisors (21474425).

64423263 is a wasteful number, since it uses less digits than its factorization.

64423263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21474424.

The product of its digits is 20736, while the sum is 30.

The square root of 64423263 is about 8026.4103433602. The cubic root of 64423263 is about 400.8798611087.

The spelling of 64423263 in words is "sixty-four million, four hundred twenty-three thousand, two hundred sixty-three".