16663934 has 12 divisors (see below), whose sum is σ = 28592952. Its totient is φ = 7135140.

The previous prime is 16663883. The next prime is 16663963. The reversal of 16663934 is 43936661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14729 + ... + 15819.

It is an arithmetic number, because the mean of its divisors is an integer number (2382746).

Almost surely, 2^16663934 is an apocalyptic number.

16663934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16663934 is a deficient number, since it is larger than the sum of its proper divisors (11929018).

16663934 is an frugal number, since it uses more digits than its factorization.

16663934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 1100 counting only the distinct ones).

The product of its digits is 69984, while the sum is 38.

The square root of 16663934 is about 4082.1482089704. The cubic root of 16663934 is about 255.4225162465.

The spelling of 16663934 in words is "sixteen million, six hundred sixty-three thousand, nine hundred thirty-four".