361033661 has 2 divisors, whose sum is σ = 361033662. Its totient is φ = 361033660.

The previous prime is 361033637. The next prime is 361033663. The reversal of 361033661 is 166330163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332880025 + 28153636 = 18245^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 361033661 - 2⁶ = 361033597 is a prime.

It is a Sophie Germain prime.

Together with 361033663, it forms a pair of twin primes.

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 (361033663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180516830 + 180516831.

It is an arithmetic number, because the mean of its divisors is an integer number (180516831).

Almost surely, 2^361033661 is an apocalyptic number.

It is an amenable number.

361033661 is a deficient number, since it is larger than the sum of its proper divisors (1).

361033661 is an equidigital number, since it uses as much as digits as its factorization.

361033661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 361033661 is about 19000.8857951412. The cubic root of 361033661 is about 712.0588661983.

The spelling of 361033661 in words is "three hundred sixty-one million, thirty-three thousand, six hundred sixty-one".