64085579 has 4 divisors (see below), whose sum is σ = 64105776. Its totient is φ = 64065384.

The previous prime is 64085573. The next prime is 64085627. The reversal of 64085579 is 97558046.

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 64085579 - 2⁸ = 64085323 is a prime.

It is a super-2 number, since 2×64085579² = 8213922871530482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64085573) 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, 4184 + ... + 12069.

It is an arithmetic number, because the mean of its divisors is an integer number (16026444).

Almost surely, 2^64085579 is an apocalyptic number.

64085579 is a deficient number, since it is larger than the sum of its proper divisors (20197).

64085579 is a wasteful number, since it uses less digits than its factorization.

64085579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20196.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 64085579 is about 8005.3469006658. The cubic root of 64085579 is about 400.1782101744.

The spelling of 64085579 in words is "sixty-four million, eighty-five thousand, five hundred seventy-nine".