668300963 has 4 divisors (see below), whose sum is σ = 729055608. Its totient is φ = 607546320.

The previous prime is 668300951. The next prime is 668300981. The reversal of 668300963 is 369003866.

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 668300963 - 2²² = 664106659 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 668300963.

It is not an unprimeable number, because it can be changed into a prime (668300063) 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, 30377306 + ... + 30377327.

It is an arithmetic number, because the mean of its divisors is an integer number (182263902).

Almost surely, 2^668300963 is an apocalyptic number.

668300963 is a deficient number, since it is larger than the sum of its proper divisors (60754645).

668300963 is a wasteful number, since it uses less digits than its factorization.

668300963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60754644.

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

The square root of 668300963 is about 25851.5176150260. The cubic root of 668300963 is about 874.2937268878.

The spelling of 668300963 in words is "six hundred sixty-eight million, three hundred thousand, nine hundred sixty-three".