68820723 has 6 divisors (see below), whose sum is σ = 99407724. Its totient is φ = 45880476.

The previous prime is 68820701. The next prime is 68820733. The reversal of 68820723 is 32702886.

It is a happy number.

It is not a de Polignac number, because 68820723 - 2⁹ = 68820211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68820733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3823365 + ... + 3823382.

It is an arithmetic number, because the mean of its divisors is an integer number (16567954).

Almost surely, 2^68820723 is an apocalyptic number.

68820723 is a deficient number, since it is larger than the sum of its proper divisors (30587001).

68820723 is a wasteful number, since it uses less digits than its factorization.

68820723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646753 (or 7646750 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68820723 is about 8295.8256370297. The cubic root of 68820723 is about 409.8010595435.

The spelling of 68820723 in words is "sixty-eight million, eight hundred twenty thousand, seven hundred twenty-three".