395636668 has 24 divisors (see below), whose sum is σ = 793497600. Its totient is φ = 169081968.

The previous prime is 395636627. The next prime is 395636669. The reversal of 395636668 is 866636593.

It is a super-2 number, since 2×395636668² = 313056746132284448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395636669) 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 7 ways as a sum of consecutive naturals, for example, 9628 + ... + 29731.

It is an arithmetic number, because the mean of its divisors is an integer number (33062400).

Almost surely, 2^395636668 is an apocalyptic number.

It is an amenable number.

395636668 is an abundant number, since it is smaller than the sum of its proper divisors (397860932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395636668 is a wasteful number, since it uses less digits than its factorization.

395636668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39729 (or 39727 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 52.

The square root of 395636668 is about 19890.6175871942. The cubic root of 395636668 is about 734.1173899712.

The spelling of 395636668 in words is "three hundred ninety-five million, six hundred thirty-six thousand, six hundred sixty-eight".