64461579 has 32 divisors (see below), whose sum is σ = 106229760. Its totient is φ = 33858432.

The previous prime is 64461559. The next prime is 64461587. The reversal of 64461579 is 97516446.

It is not a de Polignac number, because 64461579 - 2⁷ = 64461451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64461579.

It is not an unprimeable number, because it can be changed into a prime (64461559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105894 + ... + 106500.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^64461579 is an apocalyptic number.

64461579 is a deficient number, since it is larger than the sum of its proper divisors (41768181).

64461579 is a wasteful number, since it uses less digits than its factorization.

64461579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its digits is 181440, while the sum is 42.

The square root of 64461579 is about 8028.7968588077. The cubic root of 64461579 is about 400.9593203386.

The spelling of 64461579 in words is "sixty-four million, four hundred sixty-one thousand, five hundred seventy-nine".