401685712 has 40 divisors (see below), whose sum is σ = 792072320. Its totient is φ = 197303040.

The previous prime is 401685701. The next prime is 401685719. The reversal of 401685712 is 217586104.

It is a super-2 number, since 2×401685712² = 322702822449893888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401685719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386089 + ... + 387127.

It is an arithmetic number, because the mean of its divisors is an integer number (19801808).

Almost surely, 2^401685712 is an apocalyptic number.

It is an amenable number.

401685712 is a deficient number, since it is larger than the sum of its proper divisors (390386608).

401685712 is a wasteful number, since it uses less digits than its factorization.

401685712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 401685712 is about 20042.0984929223. The cubic root of 401685712 is about 737.8398851631.

The spelling of 401685712 in words is "four hundred one million, six hundred eighty-five thousand, seven hundred twelve".