16663602 has 8 divisors (see below), whose sum is σ = 33327216. Its totient is φ = 5554532.

The previous prime is 16663583. The next prime is 16663607. The reversal of 16663602 is 20636661.

16663602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

16663602 is an admirable number.

It is a super-2 number, since 2×16663602² = 555351263228808, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16663602.

It is not an unprimeable number, because it can be changed into a prime (16663607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388628 + ... + 1388639.

It is an arithmetic number, because the mean of its divisors is an integer number (4165902).

Almost surely, 2^16663602 is an apocalyptic number.

16663602 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16663602 is a wasteful number, since it uses less digits than its factorization.

16663602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777272.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 16663602 is about 4082.1075439043. The cubic root of 16663602 is about 255.4208199516.

The spelling of 16663602 in words is "sixteen million, six hundred sixty-three thousand, six hundred two".