64571854 has 4 divisors (see below), whose sum is σ = 96857784. Its totient is φ = 32285926.

The previous prime is 64571851. The next prime is 64571863. The reversal of 64571854 is 45817546.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64571851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16142962 + ... + 16142965.

It is an arithmetic number, because the mean of its divisors is an integer number (24214446).

Almost surely, 2^64571854 is an apocalyptic number.

64571854 is a deficient number, since it is larger than the sum of its proper divisors (32285930).

64571854 is a wasteful number, since it uses less digits than its factorization.

64571854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32285929.

The product of its digits is 134400, while the sum is 40.

The square root of 64571854 is about 8035.6613915719. The cubic root of 64571854 is about 401.1878316483.

The spelling of 64571854 in words is "sixty-four million, five hundred seventy-one thousand, eight hundred fifty-four".