64263885 has 16 divisors (see below), whose sum is σ = 117511296. Its totient is φ = 29377728.

The previous prime is 64263877. The next prime is 64263889. The reversal of 64263885 is 58836246.

It is not a de Polignac number, because 64263885 - 2³ = 64263877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64263889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305914 + ... + 306123.

It is an arithmetic number, because the mean of its divisors is an integer number (7344456).

Almost surely, 2^64263885 is an apocalyptic number.

It is an amenable number.

64263885 is a deficient number, since it is larger than the sum of its proper divisors (53247411).

64263885 is a wasteful number, since it uses less digits than its factorization.

64263885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612052.

The product of its digits is 276480, while the sum is 42.

The square root of 64263885 is about 8016.4758466548. The cubic root of 64263885 is about 400.5490065514.

The spelling of 64263885 in words is "sixty-four million, two hundred sixty-three thousand, eight hundred eighty-five".