564646646465 has 8 divisors (see below), whose sum is σ = 739173791808. Its totient is φ = 410652106480.

The previous prime is 564646646411. The next prime is 564646646477.

564646646465 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-564646646465 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564646646398 and 564646646407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133151277 + ... + 5133151386.

It is an arithmetic number, because the mean of its divisors is an integer number (92396723976).

Almost surely, 2^564646646465 is an apocalyptic number.

564646646465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

564646646465 is a deficient number, since it is larger than the sum of its proper divisors (174527145343).

564646646465 is a wasteful number, since it uses less digits than its factorization.

564646646465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266302679.

The product of its digits is 298598400, while the sum is 62.

The spelling of 564646646465 in words is "five hundred sixty-four billion, six hundred forty-six million, six hundred forty-six thousand, four hundred sixty-five".