68951983 has 16 divisors (see below), whose sum is σ = 74511360. Its totient is φ = 63576576.

The previous prime is 68951957. The next prime is 68952019. The reversal of 68951983 is 38915986.

It is a cyclic number.

It is not a de Polignac number, because 68951983 - 2⁵ = 68951951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68951903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235185 + ... + 235477.

It is an arithmetic number, because the mean of its divisors is an integer number (4656960).

Almost surely, 2^68951983 is an apocalyptic number.

68951983 is a deficient number, since it is larger than the sum of its proper divisors (5559377).

68951983 is a wasteful number, since it uses less digits than its factorization.

68951983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 466560, while the sum is 49.

The square root of 68951983 is about 8303.7330761532. The cubic root of 68951983 is about 410.0614284323.

The spelling of 68951983 in words is "sixty-eight million, nine hundred fifty-one thousand, nine hundred eighty-three".