64895999 has 8 divisors (see below), whose sum is σ = 75274368. Its totient is φ = 54794520.

The previous prime is 64895993. The next prime is 64896011. The reversal of 64895999 is 99959846.

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 64895999 - 2¹² = 64891903 is a prime.

It is a super-2 number, since 2×64895999² = 8422981372416002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64895993) 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, 68717 + ... + 69654.

It is an arithmetic number, because the mean of its divisors is an integer number (9409296).

Almost surely, 2^64895999 is an apocalyptic number.

64895999 is a deficient number, since it is larger than the sum of its proper divisors (10378369).

64895999 is a wasteful number, since it uses less digits than its factorization.

64895999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138445.

The product of its digits is 6298560, while the sum is 59.

The square root of 64895999 is about 8055.8052980444. The cubic root of 64895999 is about 401.8580206186.

The spelling of 64895999 in words is "sixty-four million, eight hundred ninety-five thousand, nine hundred ninety-nine".