64845069 has 8 divisors (see below), whose sum is σ = 86499840. Its totient is φ = 43210176.

The previous prime is 64845061. The next prime is 64845083. The reversal of 64845069 is 96054846.

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

It is not a de Polignac number, because 64845069 - 2³ = 64845061 is a prime.

It is a super-2 number, since 2×64845069² = 8409765947229522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64845069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64845061) 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, 6292 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (10812480).

Almost surely, 2^64845069 is an apocalyptic number.

It is an amenable number.

64845069 is a deficient number, since it is larger than the sum of its proper divisors (21654771).

64845069 is a wasteful number, since it uses less digits than its factorization.

64845069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9939.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 64845069 is about 8052.6436031902. The cubic root of 64845069 is about 401.7528678322.

The spelling of 64845069 in words is "sixty-four million, eight hundred forty-five thousand, sixty-nine".