64145579 has 2 divisors, whose sum is σ = 64145580. Its totient is φ = 64145578.

The previous prime is 64145561. The next prime is 64145621. The reversal of 64145579 is 97554146.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64145579 is a prime.

It is a super-2 number, since 2×64145579² = 8229310610490482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64145509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32072789 + 32072790.

It is an arithmetic number, because the mean of its divisors is an integer number (32072790).

Almost surely, 2^64145579 is an apocalyptic number.

64145579 is a deficient number, since it is larger than the sum of its proper divisors (1).

64145579 is an equidigital number, since it uses as much as digits as its factorization.

64145579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 64145579 is about 8009.0935192442. The cubic root of 64145579 is about 400.3030599121.

The spelling of 64145579 in words is "sixty-four million, one hundred forty-five thousand, five hundred seventy-nine".