68709983 has 4 divisors (see below), whose sum is σ = 69165168. Its totient is φ = 68254800.

The previous prime is 68709967. The next prime is 68710027. The reversal of 68709983 is 38990786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68709983 - 2⁴ = 68709967 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 (68709913) 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, 227366 + ... + 227667.

It is an arithmetic number, because the mean of its divisors is an integer number (17291292).

Almost surely, 2^68709983 is an apocalyptic number.

68709983 is a deficient number, since it is larger than the sum of its proper divisors (455185).

68709983 is a wasteful number, since it uses less digits than its factorization.

68709983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455184.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 68709983 is about 8289.1485087432. The cubic root of 68709983 is about 409.5811367726.

The spelling of 68709983 in words is "sixty-eight million, seven hundred nine thousand, nine hundred eighty-three".