68421263 has 2 divisors, whose sum is σ = 68421264. Its totient is φ = 68421262.

The previous prime is 68421259. The next prime is 68421281. The reversal of 68421263 is 36212486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68421263 - 2² = 68421259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68421203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34210631 + 34210632.

It is an arithmetic number, because the mean of its divisors is an integer number (34210632).

Almost surely, 2^68421263 is an apocalyptic number.

68421263 is a deficient number, since it is larger than the sum of its proper divisors (1).

68421263 is an equidigital number, since it uses as much as digits as its factorization.

68421263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 68421263 is about 8271.7146348263. The cubic root of 68421263 is about 409.0066434041.

The spelling of 68421263 in words is "sixty-eight million, four hundred twenty-one thousand, two hundred sixty-three".