664183846 has 24 divisors (see below), whose sum is σ = 1084179096. Its totient is φ = 304922880.

The previous prime is 664183843. The next prime is 664183847. The reversal of 664183846 is 648381466.

It is a super-2 number, since 2×664183846² = 882280362574703432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664183796 and 664183805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664183843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9685 + ... + 37711.

It is an arithmetic number, because the mean of its divisors is an integer number (45174129).

Almost surely, 2^664183846 is an apocalyptic number.

664183846 is a deficient number, since it is larger than the sum of its proper divisors (419995250).

664183846 is a wasteful number, since it uses less digits than its factorization.

664183846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28104 (or 28087 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 664183846 is about 25771.7645107975. The cubic root of 664183846 is about 872.4946438535.

The spelling of 664183846 in words is "six hundred sixty-four million, one hundred eighty-three thousand, eight hundred forty-six".