68279783 has 12 divisors (see below), whose sum is σ = 80333064. Its totient is φ = 57214800.

The previous prime is 68279759. The next prime is 68279789. The reversal of 68279783 is 38797286.

It is a happy number.

It is not a de Polignac number, because 68279783 - 2²⁰ = 67231207 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 (68279789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98468 + ... + 99158.

It is an arithmetic number, because the mean of its divisors is an integer number (6694422).

Almost surely, 2^68279783 is an apocalyptic number.

68279783 is a deficient number, since it is larger than the sum of its proper divisors (12053281).

68279783 is an equidigital number, since it uses as much as digits as its factorization.

68279783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406 (or 715 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 68279783 is about 8263.1581734831. The cubic root of 68279783 is about 408.7245371888.

The spelling of 68279783 in words is "sixty-eight million, two hundred seventy-nine thousand, seven hundred eighty-three".