16663707 has 24 divisors (see below), whose sum is σ = 25459200. Its totient is φ = 10481328.

The previous prime is 16663697. The next prime is 16663763. The reversal of 16663707 is 70736661.

It is not a de Polignac number, because 16663707 - 2¹⁰ = 16662683 is a prime.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (16663307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15844 + ... + 16862.

It is an arithmetic number, because the mean of its divisors is an integer number (1060800).

Almost surely, 2^16663707 is an apocalyptic number.

16663707 is a deficient number, since it is larger than the sum of its proper divisors (8795493).

16663707 is a wasteful number, since it uses less digits than its factorization.

16663707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 16663707 is about 4082.1204048876. The cubic root of 16663707 is about 255.4213564329.

The spelling of 16663707 in words is "sixteen million, six hundred sixty-three thousand, seven hundred seven".