68393623 has 2 divisors, whose sum is σ = 68393624. Its totient is φ = 68393622.

The previous prime is 68393621. The next prime is 68393639. The reversal of 68393623 is 32639386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68393623 - 2¹ = 68393621 is a prime.

It is a super-2 number, since 2×68393623² = 9355375334132258, which contains 22 as substring.

Together with 68393621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68393621) 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, 34196811 + 34196812.

It is an arithmetic number, because the mean of its divisors is an integer number (34196812).

Almost surely, 2^68393623 is an apocalyptic number.

68393623 is a deficient number, since it is larger than the sum of its proper divisors (1).

68393623 is an equidigital number, since it uses as much as digits as its factorization.

68393623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The square root of 68393623 is about 8270.0437120973. The cubic root of 68393623 is about 408.9515607892.

The spelling of 68393623 in words is "sixty-eight million, three hundred ninety-three thousand, six hundred twenty-three".