363147661 has 2 divisors, whose sum is σ = 363147662. Its totient is φ = 363147660.

The previous prime is 363147649. The next prime is 363147683. The reversal of 363147661 is 166741363.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262245636 + 100902025 = 16194^2 + 10045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-363147661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 363147661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (363147611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181573830 + 181573831.

It is an arithmetic number, because the mean of its divisors is an integer number (181573831).

Almost surely, 2^363147661 is an apocalyptic number.

It is an amenable number.

363147661 is a deficient number, since it is larger than the sum of its proper divisors (1).

363147661 is an equidigital number, since it uses as much as digits as its factorization.

363147661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 363147661 is about 19056.4335855375. The cubic root of 363147661 is about 713.4459611713.

The spelling of 363147661 in words is "three hundred sixty-three million, one hundred forty-seven thousand, six hundred sixty-one".