16650663 has 8 divisors (see below), whose sum is σ = 22397808. Its totient is φ = 11001984.

The previous prime is 16650659. The next prime is 16650679. The reversal of 16650663 is 36605661.

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

It is not a de Polignac number, because 16650663 - 2² = 16650659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16650763) 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, 24220 + ... + 24897.

It is an arithmetic number, because the mean of its divisors is an integer number (2799726).

Almost surely, 2^16650663 is an apocalyptic number.

16650663 is a deficient number, since it is larger than the sum of its proper divisors (5747145).

16650663 is a wasteful number, since it uses less digits than its factorization.

16650663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49233.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 16650663 is about 4080.5223930276. The cubic root of 16650663 is about 255.3546928771.

The spelling of 16650663 in words is "sixteen million, six hundred fifty thousand, six hundred sixty-three".