68623693 has 2 divisors, whose sum is σ = 68623694. Its totient is φ = 68623692.

The previous prime is 68623661. The next prime is 68623699. The reversal of 68623693 is 39632686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 26347689 = 6502^2 + 5133^2 .

It is a cyclic number.

It is not a de Polignac number, because 68623693 - 2⁵ = 68623661 is a prime.

It is a super-2 number, since 2×68623693² = 9418422481916498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68623699) 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, 34311846 + 34311847.

It is an arithmetic number, because the mean of its divisors is an integer number (34311847).

Almost surely, 2^68623693 is an apocalyptic number.

It is an amenable number.

68623693 is a deficient number, since it is larger than the sum of its proper divisors (1).

68623693 is an equidigital number, since it uses as much as digits as its factorization.

68623693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 68623693 is about 8283.9418757014. The cubic root of 68623693 is about 409.4096063280.

The spelling of 68623693 in words is "sixty-eight million, six hundred twenty-three thousand, six hundred ninety-three".