68329663 has 4 divisors (see below), whose sum is σ = 68525800. Its totient is φ = 68133528.

The previous prime is 68329627. The next prime is 68329721. The reversal of 68329663 is 36692386.

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 68329663 - 2¹³ = 68321471 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 (68329603) 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, 97545 + ... + 98242.

It is an arithmetic number, because the mean of its divisors is an integer number (17131450).

Almost surely, 2^68329663 is an apocalyptic number.

68329663 is a deficient number, since it is larger than the sum of its proper divisors (196137).

68329663 is a wasteful number, since it uses less digits than its factorization.

68329663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196136.

The product of its digits is 279936, while the sum is 43.

The square root of 68329663 is about 8266.1758389233. The cubic root of 68329663 is about 408.8240406172.

The spelling of 68329663 in words is "sixty-eight million, three hundred twenty-nine thousand, six hundred sixty-three".