401353660 has 24 divisors (see below), whose sum is σ = 843570000. Its totient is φ = 160402944.

The previous prime is 401353613. The next prime is 401353661. The reversal of 401353660 is 66353104.

It is a super-2 number, since 2×401353660² = 322169520790791200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401353661) 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, 16947 + ... + 33013.

It is an arithmetic number, because the mean of its divisors is an integer number (35148750).

Almost surely, 2^401353660 is an apocalyptic number.

It is an amenable number.

401353660 is an abundant number, since it is smaller than the sum of its proper divisors (442216340).

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

401353660 is a wasteful number, since it uses less digits than its factorization.

401353660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325 (or 17323 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 401353660 is about 20033.8129171658. The cubic root of 401353660 is about 737.6365182496.

It can be divided in two parts, 401 and 353660, that added together give a triangular number (354061 = T₈₄₁).

The spelling of 401353660 in words is "four hundred one million, three hundred fifty-three thousand, six hundred sixty".