64853831 has 8 divisors (see below), whose sum is σ = 76674720. Its totient is φ = 53671968.

The previous prime is 64853819. The next prime is 64853837. The reversal of 64853831 is 13835846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64853831 - 2¹⁴ = 64837447 is a prime.

It is a super-2 number, since 2×64853831² = 8412038790753122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64853837) 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 7 ways as a sum of consecutive naturals, for example, 159536 + ... + 159941.

It is an arithmetic number, because the mean of its divisors is an integer number (9584340).

Almost surely, 2^64853831 is an apocalyptic number.

64853831 is a deficient number, since it is larger than the sum of its proper divisors (11820889).

64853831 is a wasteful number, since it uses less digits than its factorization.

64853831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319513.

The product of its digits is 69120, while the sum is 38.

The square root of 64853831 is about 8053.1876297526. The cubic root of 64853831 is about 401.7709622437.

The spelling of 64853831 in words is "sixty-four million, eight hundred fifty-three thousand, eight hundred thirty-one".