64855653 has 16 divisors (see below), whose sum is σ = 92336640. Its totient is φ = 40393584.

The previous prime is 64855649. The next prime is 64855667. The reversal of 64855653 is 35655846.

It is a happy number.

It is not a de Polignac number, because 64855653 - 2² = 64855649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64855613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7963 + ... + 13896.

It is an arithmetic number, because the mean of its divisors is an integer number (5771040).

Almost surely, 2^64855653 is an apocalyptic number.

It is an amenable number.

64855653 is a deficient number, since it is larger than the sum of its proper divisors (27480987).

64855653 is a wasteful number, since it uses less digits than its factorization.

64855653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21928.

The product of its digits is 432000, while the sum is 42.

The square root of 64855653 is about 8053.3007518657. The cubic root of 64855653 is about 401.7747246524.

The spelling of 64855653 in words is "sixty-four million, eight hundred fifty-five thousand, six hundred fifty-three".