64091579 has 6 divisors (see below), whose sum is σ = 67642740. Its totient is φ = 60717996.

The previous prime is 64091567. The next prime is 64091611. The reversal of 64091579 is 97519046.

It is not a de Polignac number, because 64091579 - 2⁴ = 64091563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64091509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88409 + ... + 89130.

It is an arithmetic number, because the mean of its divisors is an integer number (11273790).

Almost surely, 2^64091579 is an apocalyptic number.

64091579 is a deficient number, since it is larger than the sum of its proper divisors (3551161).

64091579 is a wasteful number, since it uses less digits than its factorization.

64091579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177577 (or 177558 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 64091579 is about 8005.7216414262. The cubic root of 64091579 is about 400.1906986539.

The spelling of 64091579 in words is "sixty-four million, ninety-one thousand, five hundred seventy-nine".