64900855 has 8 divisors (see below), whose sum is σ = 78054192. Its totient is φ = 51805248.

The previous prime is 64900841. The next prime is 64900859. The reversal of 64900855 is 55800946.

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 64900855 - 2⁷ = 64900727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64900859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11917 + ... + 16486.

It is an arithmetic number, because the mean of its divisors is an integer number (9756774).

Almost surely, 2^64900855 is an apocalyptic number.

64900855 is a deficient number, since it is larger than the sum of its proper divisors (13153337).

64900855 is a wasteful number, since it uses less digits than its factorization.

64900855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28865.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 64900855 is about 8056.1066899589. The cubic root of 64900855 is about 401.8680437012.

Subtracting from 64900855 its reverse (55800946), we obtain a palindrome (9099909).

The spelling of 64900855 in words is "sixty-four million, nine hundred thousand, eight hundred fifty-five".