64854387 has 24 divisors (see below), whose sum is σ = 104144768. Its totient is φ = 38620800.

The previous prime is 64854359. The next prime is 64854397. The reversal of 64854387 is 78345846.

It is not a de Polignac number, because 64854387 - 2¹⁴ = 64838003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64854347) 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 23 ways as a sum of consecutive naturals, for example, 5314 + ... + 12567.

Almost surely, 2^64854387 is an apocalyptic number.

64854387 is a deficient number, since it is larger than the sum of its proper divisors (39290381).

64854387 is a wasteful number, since it uses less digits than its factorization.

64854387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17931 (or 17928 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 64854387 is about 8053.2221501707. Note that the first 3 decimals coincide. The cubic root of 64854387 is about 401.7721103847.

The spelling of 64854387 in words is "sixty-four million, eight hundred fifty-four thousand, three hundred eighty-seven".