64604263 has 4 divisors (see below), whose sum is σ = 67413168. Its totient is φ = 61795360.

The previous prime is 64604261. The next prime is 64604269. The reversal of 64604263 is 36240646.

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

It is a cyclic number.

It is not a de Polignac number, because 64604263 - 2¹ = 64604261 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 (64604261) 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, 1404418 + ... + 1404463.

It is an arithmetic number, because the mean of its divisors is an integer number (16853292).

Almost surely, 2^64604263 is an apocalyptic number.

64604263 is a deficient number, since it is larger than the sum of its proper divisors (2808905).

64604263 is a wasteful number, since it uses less digits than its factorization.

64604263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808904.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 64604263 is about 8037.6777118767. The cubic root of 64604263 is about 401.2549399469.

The spelling of 64604263 in words is "sixty-four million, six hundred four thousand, two hundred sixty-three".