564969649 has 4 divisors (see below), whose sum is σ = 572927040. Its totient is φ = 557012260.

The previous prime is 564969623. The next prime is 564969673. The reversal of 564969649 is 946969465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 564969649 - 2⁷ = 564969521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564969593 and 564969602.

It is not an unprimeable number, because it can be changed into a prime (564969149) 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, 3978589 + ... + 3978730.

It is an arithmetic number, because the mean of its divisors is an integer number (143231760).

Almost surely, 2^564969649 is an apocalyptic number.

It is an amenable number.

564969649 is a deficient number, since it is larger than the sum of its proper divisors (7957391).

564969649 is an equidigital number, since it uses as much as digits as its factorization.

564969649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7957390.

The product of its digits is 12597120, while the sum is 58.

The square root of 564969649 is about 23769.0902013518. The cubic root of 564969649 is about 826.6881375761.

The spelling of 564969649 in words is "five hundred sixty-four million, nine hundred sixty-nine thousand, six hundred forty-nine".