64854399 has 4 divisors (see below), whose sum is σ = 86472536. Its totient is φ = 43236264.

The previous prime is 64854397. The next prime is 64854401. The reversal of 64854399 is 99345846.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64854397) and next prime (64854401).

It is not a de Polignac number, because 64854399 - 2¹ = 64854397 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 (64854397) 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 3 ways as a sum of consecutive naturals, for example, 10809064 + ... + 10809069.

It is an arithmetic number, because the mean of its divisors is an integer number (21618134).

Almost surely, 2^64854399 is an apocalyptic number.

64854399 is a deficient number, since it is larger than the sum of its proper divisors (21618137).

64854399 is a wasteful number, since it uses less digits than its factorization.

64854399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21618136.

The product of its digits is 933120, while the sum is 48.

The square root of 64854399 is about 8053.2228952141. Note that the first 3 decimals coincide. The cubic root of 64854399 is about 401.7721351646.

The spelling of 64854399 in words is "sixty-four million, eight hundred fifty-four thousand, three hundred ninety-nine".