64854385 has 16 divisors (see below), whose sum is σ = 78848640. Its totient is φ = 51207040.

The previous prime is 64854359. The next prime is 64854397. The reversal of 64854385 is 58345846.

It is not a de Polignac number, because 64854385 - 2¹⁷ = 64723313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208380 + ... + 208690.

It is an arithmetic number, because the mean of its divisors is an integer number (4928040).

Almost surely, 2^64854385 is an apocalyptic number.

It is an amenable number.

64854385 is a deficient number, since it is larger than the sum of its proper divisors (13994255).

64854385 is a wasteful number, since it uses less digits than its factorization.

64854385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its digits is 460800, while the sum is 43.

The square root of 64854385 is about 8053.2220259968. Note that the first 3 decimals coincide. The cubic root of 64854385 is about 401.7721062547.

The spelling of 64854385 in words is "sixty-four million, eight hundred fifty-four thousand, three hundred eighty-five".