68245631 has 2 divisors, whose sum is σ = 68245632. Its totient is φ = 68245630.

The previous prime is 68245603. The next prime is 68245643. The reversal of 68245631 is 13654286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68245631 - 2²⁶ = 1136767 is a prime.

It is a super-2 number, since 2×68245631² = 9314932301176322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68245591 and 68245600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68245691) 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, 34122815 + 34122816.

It is an arithmetic number, because the mean of its divisors is an integer number (34122816).

Almost surely, 2^68245631 is an apocalyptic number.

68245631 is a deficient number, since it is larger than the sum of its proper divisors (1).

68245631 is an equidigital number, since it uses as much as digits as its factorization.

68245631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 68245631 is about 8261.0913927882. The cubic root of 68245631 is about 408.6563809073.

The spelling of 68245631 in words is "sixty-eight million, two hundred forty-five thousand, six hundred thirty-one".