16627997 has 8 divisors (see below), whose sum is σ = 17240832. Its totient is φ = 16020000.

The previous prime is 16627981. The next prime is 16628009. The reversal of 16627997 is 79972661.

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

It is a cyclic number.

It is not a de Polignac number, because 16627997 - 2⁴ = 16627981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16627957) 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, 6713 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (2155104).

Almost surely, 2^16627997 is an apocalyptic number.

It is an amenable number.

16627997 is a deficient number, since it is larger than the sum of its proper divisors (612835).

16627997 is a wasteful number, since it uses less digits than its factorization.

16627997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419.

The product of its digits is 285768, while the sum is 47.

The square root of 16627997 is about 4077.7441067335. The cubic root of 16627997 is about 255.2387716124.

The spelling of 16627997 in words is "sixteen million, six hundred twenty-seven thousand, nine hundred ninety-seven".