68492261 has 2 divisors, whose sum is σ = 68492262. Its totient is φ = 68492260.

The previous prime is 68492251. The next prime is 68492267. The reversal of 68492261 is 16229486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 6791236 = 7855^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 68492261 - 2⁶ = 68492197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68492267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34246130 + 34246131.

It is an arithmetic number, because the mean of its divisors is an integer number (34246131).

Almost surely, 2^68492261 is an apocalyptic number.

It is an amenable number.

68492261 is a deficient number, since it is larger than the sum of its proper divisors (1).

68492261 is an equidigital number, since it uses as much as digits as its factorization.

68492261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 68492261 is about 8276.0051353295. The cubic root of 68492261 is about 409.1480644288.

The spelling of 68492261 in words is "sixty-eight million, four hundred ninety-two thousand, two hundred sixty-one".