401165636 has 24 divisors (see below), whose sum is σ = 711669504. Its totient is φ = 197847360.

The previous prime is 401165629. The next prime is 401165641. The reversal of 401165636 is 636561104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109856 + ... + 113448.

It is an arithmetic number, because the mean of its divisors is an integer number (29652896).

Almost surely, 2^401165636 is an apocalyptic number.

It is an amenable number.

401165636 is a deficient number, since it is larger than the sum of its proper divisors (310503868).

401165636 is a wasteful number, since it uses less digits than its factorization.

401165636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 401165636 is about 20029.1197010752. The cubic root of 401165636 is about 737.5213122636.

The spelling of 401165636 in words is "four hundred one million, one hundred sixty-five thousand, six hundred thirty-six".