64416679 has 4 divisors (see below), whose sum is σ = 65232160. Its totient is φ = 63601200.

The previous prime is 64416673. The next prime is 64416691. The reversal of 64416679 is 97661446.

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 64416679 - 2⁵ = 64416647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64416673) 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, 407622 + ... + 407779.

It is an arithmetic number, because the mean of its divisors is an integer number (16308040).

Almost surely, 2^64416679 is an apocalyptic number.

64416679 is a deficient number, since it is larger than the sum of its proper divisors (815481).

64416679 is an equidigital number, since it uses as much as digits as its factorization.

64416679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815480.

The product of its digits is 217728, while the sum is 43.

The square root of 64416679 is about 8026.0001868926. Note that the first 3 decimals coincide. The cubic root of 64416679 is about 400.8662041220.

The spelling of 64416679 in words is "sixty-four million, four hundred sixteen thousand, six hundred seventy-nine".