68272661 has 2 divisors, whose sum is σ = 68272662. Its totient is φ = 68272660.

The previous prime is 68272651. The next prime is 68272703. The reversal of 68272661 is 16627286.

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., 54538225 + 13734436 = 7385^2 + 3706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68272661 is a prime.

It is a super-2 number, since 2×68272661² = 9322312480041842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68272621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34136330 + 34136331.

It is an arithmetic number, because the mean of its divisors is an integer number (34136331).

Almost surely, 2^68272661 is an apocalyptic number.

It is an amenable number.

68272661 is a deficient number, since it is larger than the sum of its proper divisors (1).

68272661 is an equidigital number, since it uses as much as digits as its factorization.

68272661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 68272661 is about 8262.7272132148. The cubic root of 68272661 is about 408.7103258696.

The spelling of 68272661 in words is "sixty-eight million, two hundred seventy-two thousand, six hundred sixty-one".