361661568 has 64 divisors (see below), whose sum is σ = 1002456000. Its totient is φ = 115309568.

The previous prime is 361661539. The next prime is 361661579. The reversal of 361661568 is 865166163.

It is a tau number, because it is divible by the number of its divisors (64).

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, 11643 + ... + 29306.

It is an arithmetic number, because the mean of its divisors is an integer number (15663375).

Almost surely, 2^361661568 is an apocalyptic number.

It is an amenable number.

361661568 is an abundant number, since it is smaller than the sum of its proper divisors (640794432).

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

361661568 is a wasteful number, since it uses less digits than its factorization.

361661568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40989 (or 40977 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 361661568 is about 19017.4017152712. The cubic root of 361661568 is about 712.4714295715.

The spelling of 361661568 in words is "three hundred sixty-one million, six hundred sixty-one thousand, five hundred sixty-eight".