68930663 has 4 divisors (see below), whose sum is σ = 69126288. Its totient is φ = 68735040.

The previous prime is 68930657. The next prime is 68930683. The reversal of 68930663 is 36603986.

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 68930663 - 2⁶ = 68930599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68930663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68930683) 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, 97283 + ... + 97988.

It is an arithmetic number, because the mean of its divisors is an integer number (17281572).

Almost surely, 2^68930663 is an apocalyptic number.

68930663 is a deficient number, since it is larger than the sum of its proper divisors (195625).

68930663 is a wasteful number, since it uses less digits than its factorization.

68930663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195624.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 68930663 is about 8302.4492169480. The cubic root of 68930663 is about 410.0191603181.

The spelling of 68930663 in words is "sixty-eight million, nine hundred thirty thousand, six hundred sixty-three".