64552569 has 8 divisors (see below), whose sum is σ = 87694272. Its totient is φ = 42222960.

The previous prime is 64552567. The next prime is 64552577. The reversal of 64552569 is 96525546.

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

It is not a de Polignac number, because 64552569 - 2¹ = 64552567 is a prime.

It is a super-2 number, since 2×64552569² = 8334068328999522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64552569.

It is not an unprimeable number, because it can be changed into a prime (64552567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202837 + ... + 203154.

It is an arithmetic number, because the mean of its divisors is an integer number (10961784).

Almost surely, 2^64552569 is an apocalyptic number.

It is an amenable number.

64552569 is a deficient number, since it is larger than the sum of its proper divisors (23141703).

64552569 is a wasteful number, since it uses less digits than its factorization.

64552569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406047.

The product of its digits is 324000, while the sum is 42.

The square root of 64552569 is about 8034.4613385093. The cubic root of 64552569 is about 401.1478881476.

The spelling of 64552569 in words is "sixty-four million, five hundred fifty-two thousand, five hundred sixty-nine".