16630665 has 8 divisors (see below), whose sum is σ = 26609088. Its totient is φ = 8869680.

The previous prime is 16630657. The next prime is 16630693. The reversal of 16630665 is 56603661.

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

It is not a de Polignac number, because 16630665 - 2³ = 16630657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554341 + ... + 554370.

It is an arithmetic number, because the mean of its divisors is an integer number (3326136).

Almost surely, 2^16630665 is an apocalyptic number.

16630665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16630665 is a deficient number, since it is larger than the sum of its proper divisors (9978423).

16630665 is a wasteful number, since it uses less digits than its factorization.

16630665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108719.

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

The square root of 16630665 is about 4078.0712352778. The cubic root of 16630665 is about 255.2524220965.

The spelling of 16630665 in words is "sixteen million, six hundred thirty thousand, six hundred sixty-five".