68503979 has 2 divisors, whose sum is σ = 68503980. Its totient is φ = 68503978.

The previous prime is 68503951. The next prime is 68504011. The reversal of 68503979 is 97930586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68503979 - 2⁸ = 68503723 is a prime.

It is not a weakly prime, because it can be changed into another prime (68503679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34251989 + 34251990.

It is an arithmetic number, because the mean of its divisors is an integer number (34251990).

Almost surely, 2^68503979 is an apocalyptic number.

68503979 is a deficient number, since it is larger than the sum of its proper divisors (1).

68503979 is an equidigital number, since it uses as much as digits as its factorization.

68503979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 68503979 is about 8276.7130553137. The cubic root of 68503979 is about 409.1713961335.

The spelling of 68503979 in words is "sixty-eight million, five hundred three thousand, nine hundred seventy-nine".