16663480 has 32 divisors (see below), whose sum is σ = 37609200. Its totient is φ = 6644736.

The previous prime is 16663469. The next prime is 16663481. The reversal of 16663480 is 8436661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663481) 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, 24424 + ... + 25096.

Almost surely, 2^16663480 is an apocalyptic number.

16663480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16663480 is an abundant number, since it is smaller than the sum of its proper divisors (20945720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16663480 is a wasteful number, since it uses less digits than its factorization.

16663480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 16663480 is about 4082.0926006155. The cubic root of 16663480 is about 255.4201966087.

The spelling of 16663480 in words is "sixteen million, six hundred sixty-three thousand, four hundred eighty".