366868561 has 8 divisors (see below), whose sum is σ = 391723200. Its totient is φ = 342755952.

The previous prime is 366868529. The next prime is 366868609. The reversal of 366868561 is 165868663.

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

It is a cyclic number.

It is not a de Polignac number, because 366868561 - 2⁵ = 366868529 is a prime.

It is a super-3 number, since 3×366868561³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366868961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184486 + ... + 186463.

It is an arithmetic number, because the mean of its divisors is an integer number (48965400).

Almost surely, 2^366868561 is an apocalyptic number.

It is an amenable number.

366868561 is a deficient number, since it is larger than the sum of its proper divisors (24854639).

366868561 is a wasteful number, since it uses less digits than its factorization.

366868561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371015.

The product of its digits is 1244160, while the sum is 49.

The square root of 366868561 is about 19153.8132234811. The cubic root of 366868561 is about 715.8743999332.

The spelling of 366868561 in words is "three hundred sixty-six million, eight hundred sixty-eight thousand, five hundred sixty-one".