68623637 has 2 divisors, whose sum is σ = 68623638. Its totient is φ = 68623636.

The previous prime is 68623609. The next prime is 68623661. The reversal of 68623637 is 73632686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68541841 + 81796 = 8279^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 68623637 - 2²² = 64429333 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68623594 and 68623603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68622637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34311818 + 34311819.

It is an arithmetic number, because the mean of its divisors is an integer number (34311819).

Almost surely, 2^68623637 is an apocalyptic number.

It is an amenable number.

68623637 is a deficient number, since it is larger than the sum of its proper divisors (1).

68623637 is an equidigital number, since it uses as much as digits as its factorization.

68623637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 68623637 is about 8283.9384956674. The cubic root of 68623637 is about 409.4094949625.

The spelling of 68623637 in words is "sixty-eight million, six hundred twenty-three thousand, six hundred thirty-seven".