68553983 has 2 divisors, whose sum is σ = 68553984. Its totient is φ = 68553982.

The previous prime is 68553977. The next prime is 68554037. The reversal of 68553983 is 38935586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68553983 - 2⁴ = 68553967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68553913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34276991 + 34276992.

It is an arithmetic number, because the mean of its divisors is an integer number (34276992).

Almost surely, 2^68553983 is an apocalyptic number.

68553983 is a deficient number, since it is larger than the sum of its proper divisors (1).

68553983 is an equidigital number, since it uses as much as digits as its factorization.

68553983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 47.

The square root of 68553983 is about 8279.7332686506. The cubic root of 68553983 is about 409.2709291852.

The spelling of 68553983 in words is "sixty-eight million, five hundred fifty-three thousand, nine hundred eighty-three".