68624401 has 2 divisors, whose sum is σ = 68624402. Its totient is φ = 68624400.

The previous prime is 68624389. The next prime is 68624407. The reversal of 68624401 is 10442686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 21715600 = 6849^2 + 4660^2 .

It is a cyclic number.

It is not a de Polignac number, because 68624401 - 2¹³ = 68616209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68624407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34312200 + 34312201.

It is an arithmetic number, because the mean of its divisors is an integer number (34312201).

Almost surely, 2^68624401 is an apocalyptic number.

It is an amenable number.

68624401 is a deficient number, since it is larger than the sum of its proper divisors (1).

68624401 is an equidigital number, since it uses as much as digits as its factorization.

68624401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 68624401 is about 8283.9846088703. The cubic root of 68624401 is about 409.4110143014.

The spelling of 68624401 in words is "sixty-eight million, six hundred twenty-four thousand, four hundred one".