368416661 has 2 divisors, whose sum is σ = 368416662. Its totient is φ = 368416660.

The previous prime is 368416651. The next prime is 368416703. The reversal of 368416661 is 166614863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334707025 + 33709636 = 18295^2 + 5806^2 .

It is a cyclic number.

It is not a de Polignac number, because 368416661 - 2¹⁸ = 368154517 is a prime.

It is a super-2 number, since 2×368416661² = 271461672204777842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368416651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184208330 + 184208331.

It is an arithmetic number, because the mean of its divisors is an integer number (184208331).

Almost surely, 2^368416661 is an apocalyptic number.

It is an amenable number.

368416661 is a deficient number, since it is larger than the sum of its proper divisors (1).

368416661 is an equidigital number, since it uses as much as digits as its factorization.

368416661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 368416661 is about 19194.1829990234. The cubic root of 368416661 is about 716.8799280476.

The spelling of 368416661 in words is "three hundred sixty-eight million, four hundred sixteen thousand, six hundred sixty-one".