361553666 has 8 divisors (see below), whose sum is σ = 542454780. Its totient is φ = 180735408.

The previous prime is 361553659. The next prime is 361553669. The reversal of 361553666 is 666355163.

It can be written as a sum of positive squares in 2 ways, for example, as 357021025 + 4532641 = 18895^2 + 2129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (361553669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8321 + ... + 28148.

Almost surely, 2^361553666 is an apocalyptic number.

361553666 is a deficient number, since it is larger than the sum of its proper divisors (180901114).

361553666 is a wasteful number, since it uses less digits than its factorization.

361553666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41428.

The product of its digits is 291600, while the sum is 41.

The square root of 361553666 is about 19014.5645756089. The cubic root of 361553666 is about 712.4005670620.

The spelling of 361553666 in words is "three hundred sixty-one million, five hundred fifty-three thousand, six hundred sixty-six".