64585455 has 32 divisors (see below), whose sum is σ = 115492608. Its totient is φ = 30547200.

The previous prime is 64585447. The next prime is 64585457. The reversal of 64585455 is 55458546.

It is not a de Polignac number, because 64585455 - 2³ = 64585447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64585457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1992 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^64585455 is an apocalyptic number.

64585455 is a deficient number, since it is larger than the sum of its proper divisors (50907153).

64585455 is a wasteful number, since it uses less digits than its factorization.

64585455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9607.

The product of its digits is 480000, while the sum is 42.

The square root of 64585455 is about 8036.5076370274. The cubic root of 64585455 is about 401.2159975457.

The spelling of 64585455 in words is "sixty-four million, five hundred eighty-five thousand, four hundred fifty-five".