16663703 has 16 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 13455072.

The previous prime is 16663697. The next prime is 16663763. The reversal of 16663703 is 30736661.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16663703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16663703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46238 + ... + 46596.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^16663703 is an apocalyptic number.

16663703 is a deficient number, since it is larger than the sum of its proper divisors (3496297).

16663703 is a wasteful number, since it uses less digits than its factorization.

16663703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 16663703 is about 4082.1199149462. The cubic root of 16663703 is about 255.4213359955.

The spelling of 16663703 in words is "sixteen million, six hundred sixty-three thousand, seven hundred three".