192715661 has 2 divisors, whose sum is σ = 192715662. Its totient is φ = 192715660.

The previous prime is 192715639. The next prime is 192715669. The reversal of 192715661 is 166517291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133518025 + 59197636 = 11555^2 + 7694^2 .

It is a cyclic number.

It is not a de Polignac number, because 192715661 - 2²⁶ = 125606797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192715669) 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 as a sum of consecutive naturals, namely, 96357830 + 96357831.

It is an arithmetic number, because the mean of its divisors is an integer number (96357831).

Almost surely, 2^192715661 is an apocalyptic number.

It is an amenable number.

192715661 is a deficient number, since it is larger than the sum of its proper divisors (1).

192715661 is an equidigital number, since it uses as much as digits as its factorization.

192715661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The square root of 192715661 is about 13882.2066329528. The cubic root of 192715661 is about 577.6157183951.

The spelling of 192715661 in words is "one hundred ninety-two million, seven hundred fifteen thousand, six hundred sixty-one".