64589985 has 24 divisors (see below), whose sum is σ = 114341760. Its totient is φ = 33713952.

The previous prime is 64589983. The next prime is 64590007. The reversal of 64589985 is 58998546.

It is a happy number.

It is not a de Polignac number, because 64589985 - 2¹ = 64589983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64589983) 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, 13155 + ... + 17384.

It is an arithmetic number, because the mean of its divisors is an integer number (4764240).

Almost surely, 2^64589985 is an apocalyptic number.

It is an amenable number.

64589985 is a deficient number, since it is larger than the sum of its proper divisors (49751775).

64589985 is a wasteful number, since it uses less digits than its factorization.

64589985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30597 (or 30594 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 64589985 is about 8036.7894709268. The cubic root of 64589985 is about 401.2253777071.

The spelling of 64589985 in words is "sixty-four million, five hundred eighty-nine thousand, nine hundred eighty-five".