68902793 has 4 divisors (see below), whose sum is σ = 68941380. Its totient is φ = 68864208.

The previous prime is 68902789. The next prime is 68902807. The reversal of 68902793 is 39720986.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37002889 + 31899904 = 6083^2 + 5648^2 .

It is a cyclic number.

It is not a de Polignac number, because 68902793 - 2² = 68902789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68902693) 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, 16478 + ... + 20231.

It is an arithmetic number, because the mean of its divisors is an integer number (17235345).

Almost surely, 2^68902793 is an apocalyptic number.

It is an amenable number.

68902793 is a deficient number, since it is larger than the sum of its proper divisors (38587).

68902793 is a wasteful number, since it uses less digits than its factorization.

68902793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38586.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 68902793 is about 8300.7706268756. The cubic root of 68902793 is about 409.9638933105.

The spelling of 68902793 in words is "sixty-eight million, nine hundred two thousand, seven hundred ninety-three".