663929699 has 8 divisors (see below), whose sum is σ = 673654800. Its totient is φ = 654245856.

The previous prime is 663929677. The next prime is 663929701. The reversal of 663929699 is 996929366.

663929699 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663929699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663929099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22877 + ... + 43025.

It is an arithmetic number, because the mean of its divisors is an integer number (84206850).

Almost surely, 2^663929699 is an apocalyptic number.

663929699 is a deficient number, since it is larger than the sum of its proper divisors (9725101).

663929699 is a wasteful number, since it uses less digits than its factorization.

663929699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629.

The product of its digits is 8503056, while the sum is 59.

The square root of 663929699 is about 25766.8333133895. The cubic root of 663929699 is about 872.3833442555.

The spelling of 663929699 in words is "six hundred sixty-three million, nine hundred twenty-nine thousand, six hundred ninety-nine".