68691263 has 2 divisors, whose sum is σ = 68691264. Its totient is φ = 68691262.

The previous prime is 68691247. The next prime is 68691269. The reversal of 68691263 is 36219686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68691263 - 2⁴ = 68691247 is a prime.

It is a super-2 number, since 2×68691263² = 9436979225070338, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68691263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68691269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34345631 + 34345632.

It is an arithmetic number, because the mean of its divisors is an integer number (34345632).

Almost surely, 2^68691263 is an apocalyptic number.

68691263 is a deficient number, since it is larger than the sum of its proper divisors (1).

68691263 is an equidigital number, since it uses as much as digits as its factorization.

68691263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 68691263 is about 8288.0192446688. The cubic root of 68691263 is about 409.5439366697.

It can be divided in two parts, 6 and 8691263, that multiplied together give a triangular number (52147578 = T₁₀₂₁₂).

The spelling of 68691263 in words is "sixty-eight million, six hundred ninety-one thousand, two hundred sixty-three".