68108973 has 4 divisors (see below), whose sum is σ = 90811968. Its totient is φ = 45405980.

The previous prime is 68108933. The next prime is 68108983. The reversal of 68108973 is 37980186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68108973 - 2⁹ = 68108461 is a prime.

It is a super-2 number, since 2×68108973² = 9277664406229458, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68108903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11351493 + ... + 11351498.

It is an arithmetic number, because the mean of its divisors is an integer number (22702992).

Almost surely, 2^68108973 is an apocalyptic number.

It is an amenable number.

68108973 is a deficient number, since it is larger than the sum of its proper divisors (22702995).

68108973 is a wasteful number, since it uses less digits than its factorization.

68108973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22702994.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 68108973 is about 8252.8160648351. The cubic root of 68108973 is about 408.3834282379.

The spelling of 68108973 in words is "sixty-eight million, one hundred eight thousand, nine hundred seventy-three".