64398285 has 24 divisors (see below), whose sum is σ = 127570560. Its totient is φ = 29439072.

The previous prime is 64398281. The next prime is 64398343. The reversal of 64398285 is 58289346.

It is not a de Polignac number, because 64398285 - 2² = 64398281 is a prime.

It is a super-2 number, since 2×64398285² = 8294278221882450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 64398285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64398281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101905 + ... + 102534.

It is an arithmetic number, because the mean of its divisors is an integer number (5315440).

Almost surely, 2^64398285 is an apocalyptic number.

It is an amenable number.

64398285 is a deficient number, since it is larger than the sum of its proper divisors (63172275).

64398285 is a wasteful number, since it uses less digits than its factorization.

64398285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204457 (or 204454 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 64398285 is about 8024.8542042831. The cubic root of 64398285 is about 400.8280450872.

The spelling of 64398285 in words is "sixty-four million, three hundred ninety-eight thousand, two hundred eighty-five".