64079561 has 12 divisors (see below), whose sum is σ = 79301952. Its totient is φ = 50699376.

The previous prime is 64079549. The next prime is 64079563. The reversal of 64079561 is 16597046.

It is not a de Polignac number, because 64079561 - 2⁶ = 64079497 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64079563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25901 + ... + 28266.

It is an arithmetic number, because the mean of its divisors is an integer number (6608496).

Almost surely, 2^64079561 is an apocalyptic number.

It is an amenable number.

64079561 is a deficient number, since it is larger than the sum of its proper divisors (15222391).

64079561 is a wasteful number, since it uses less digits than its factorization.

64079561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54200 (or 54187 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 64079561 is about 8004.9710180612. The cubic root of 64079561 is about 400.1656834463.

The spelling of 64079561 in words is "sixty-four million, seventy-nine thousand, five hundred sixty-one".