68884261 has 2 divisors, whose sum is σ = 68884262. Its totient is φ = 68884260.

The previous prime is 68884219. The next prime is 68884267. The reversal of 68884261 is 16248886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 2461761 = 8150^2 + 1569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68884261 is a prime.

It is a super-2 number, since 2×68884261² = 9490082827032242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68884267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34442130 + 34442131.

It is an arithmetic number, because the mean of its divisors is an integer number (34442131).

Almost surely, 2^68884261 is an apocalyptic number.

It is an amenable number.

68884261 is a deficient number, since it is larger than the sum of its proper divisors (1).

68884261 is an equidigital number, since it uses as much as digits as its factorization.

68884261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 43.

The square root of 68884261 is about 8299.6542699079. The cubic root of 68884261 is about 409.9271355741.

The spelling of 68884261 in words is "sixty-eight million, eight hundred eighty-four thousand, two hundred sixty-one".