663982694 has 8 divisors (see below), whose sum is σ = 1019136360. Its totient is φ = 324270576.

The previous prime is 663982691. The next prime is 663982717. The reversal of 663982694 is 496289366.

663982694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663982691) 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, 3860279 + ... + 3860450.

It is an arithmetic number, because the mean of its divisors is an integer number (127392045).

Almost surely, 2^663982694 is an apocalyptic number.

663982694 is a deficient number, since it is larger than the sum of its proper divisors (355153666).

663982694 is a wasteful number, since it uses less digits than its factorization.

663982694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720774.

The product of its digits is 3359232, while the sum is 53.

The square root of 663982694 is about 25767.8616497373. The cubic root of 663982694 is about 872.4065549083.

The spelling of 663982694 in words is "six hundred sixty-three million, nine hundred eighty-two thousand, six hundred ninety-four".