64269569 has 16 divisors (see below), whose sum is σ = 79685760. Its totient is φ = 50474880.

The previous prime is 64269553. The next prime is 64269587. The reversal of 64269569 is 96596246.

It is a cyclic number.

It is not a de Polignac number, because 64269569 - 2⁴ = 64269553 is a prime.

It is a super-2 number, since 2×64269569² = 8261154998891522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64269589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10109 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (4980360).

Almost surely, 2^64269569 is an apocalyptic number.

It is an amenable number.

64269569 is a deficient number, since it is larger than the sum of its proper divisors (15416191).

64269569 is a wasteful number, since it uses less digits than its factorization.

64269569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240.

The product of its digits is 699840, while the sum is 47.

The square root of 64269569 is about 8016.8303586891. The cubic root of 64269569 is about 400.5608154310.

The spelling of 64269569 in words is "sixty-four million, two hundred sixty-nine thousand, five hundred sixty-nine".