64264809 has 16 divisors (see below), whose sum is σ = 98373632. Its totient is φ = 36555408.

The previous prime is 64264807. The next prime is 64264817. The reversal of 64264809 is 90846246.

It is not a de Polignac number, because 64264809 - 2¹ = 64264807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64264807) 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, 2179 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (6148352).

Almost surely, 2^64264809 is an apocalyptic number.

It is an amenable number.

64264809 is a deficient number, since it is larger than the sum of its proper divisors (34108823).

64264809 is a wasteful number, since it uses less digits than its factorization.

64264809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13956.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64264809 is about 8016.5334777571. The cubic root of 64264809 is about 400.5509262689.

The spelling of 64264809 in words is "sixty-four million, two hundred sixty-four thousand, eight hundred nine".