401363636 has 12 divisors (see below), whose sum is σ = 712008612. Its totient is φ = 197932608.

The previous prime is 401363629. The next prime is 401363717. The reversal of 401363636 is 636363104.

It can be written as a sum of positive squares in 2 ways, for example, as 248692900 + 152670736 = 15770^2 + 12356^2 .

It is a super-2 number, since 2×401363636² = 322185536606280992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686975 + ... + 687558.

It is an arithmetic number, because the mean of its divisors is an integer number (59334051).

Almost surely, 2^401363636 is an apocalyptic number.

It is an amenable number.

401363636 is a deficient number, since it is larger than the sum of its proper divisors (310644976).

401363636 is a wasteful number, since it uses less digits than its factorization.

401363636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374610 (or 1374608 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 401363636 is about 20034.0618946833. The cubic root of 401363636 is about 737.6426297349.

The spelling of 401363636 in words is "four hundred one million, three hundred sixty-three thousand, six hundred thirty-six".