64569349 has 16 divisors (see below), whose sum is σ = 76833792. Its totient is φ = 53653248.

The previous prime is 64569347. The next prime is 64569377. The reversal of 64569349 is 94396546.

It is a cyclic number.

It is not a de Polignac number, because 64569349 - 2¹ = 64569347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64569299 and 64569308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64569347) 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, 1269 + ... + 11434.

It is an arithmetic number, because the mean of its divisors is an integer number (4802112).

Almost surely, 2^64569349 is an apocalyptic number.

It is an amenable number.

64569349 is a deficient number, since it is larger than the sum of its proper divisors (12264443).

64569349 is a wasteful number, since it uses less digits than its factorization.

64569349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12756.

The product of its digits is 699840, while the sum is 46.

The square root of 64569349 is about 8035.5055223676. The cubic root of 64569349 is about 401.1826436887.

The spelling of 64569349 in words is "sixty-four million, five hundred sixty-nine thousand, three hundred forty-nine".