401761616 has 20 divisors (see below), whose sum is σ = 791175924. Its totient is φ = 197587200.

The previous prime is 401761609. The next prime is 401761637. The reversal of 401761616 is 616167104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55950400 + 345811216 = 7480^2 + 18596^2 .

It is a super-2 number, since 2×401761616² = 322824792181862912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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, 204845 + ... + 206796.

Almost surely, 2^401761616 is an apocalyptic number.

It is an amenable number.

401761616 is a deficient number, since it is larger than the sum of its proper divisors (389414308).

401761616 is a wasteful number, since it uses less digits than its factorization.

401761616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411710 (or 411704 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 401761616 is about 20043.9920175598. The cubic root of 401761616 is about 737.8863572097.

The spelling of 401761616 in words is "four hundred one million, seven hundred sixty-one thousand, six hundred sixteen".