64969289 has 8 divisors (see below), whose sum is σ = 81000768. Its totient is φ = 50625360.

The previous prime is 64969279. The next prime is 64969327. The reversal of 64969289 is 98296946.

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

It is a cyclic number.

It is not a de Polignac number, because 64969289 - 2⁸ = 64969033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64969289.

It is not an unprimeable number, because it can be changed into a prime (64969249) 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, 421802 + ... + 421955.

It is an arithmetic number, because the mean of its divisors is an integer number (10125096).

Almost surely, 2^64969289 is an apocalyptic number.

It is an amenable number.

64969289 is a deficient number, since it is larger than the sum of its proper divisors (16031479).

64969289 is a wasteful number, since it uses less digits than its factorization.

64969289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843775.

The product of its digits is 1679616, while the sum is 53.

The square root of 64969289 is about 8060.3529079067. The cubic root of 64969289 is about 402.0092425455.

The spelling of 64969289 in words is "sixty-four million, nine hundred sixty-nine thousand, two hundred eighty-nine".