16663376 has 10 divisors (see below), whose sum is σ = 32285322. Its totient is φ = 8331680.

The previous prime is 16663351. The next prime is 16663393. The reversal of 16663376 is 67336661.

16663376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 16483600 + 179776 = 4060^2 + 424^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520715 + ... + 520746.

Almost surely, 2^16663376 is an apocalyptic number.

16663376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16663376 is a deficient number, since it is larger than the sum of its proper divisors (15621946).

16663376 is a wasteful number, since it uses less digits than its factorization.

16663376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041469 (or 1041463 counting only the distinct ones).

The product of its digits is 81648, while the sum is 38.

The square root of 16663376 is about 4082.0798620311. The cubic root of 16663376 is about 255.4196652320.

The spelling of 16663376 in words is "sixteen million, six hundred sixty-three thousand, three hundred seventy-six".