16651797 has 8 divisors (see below), whose sum is σ = 22246944. Its totient is φ = 11078928.

The previous prime is 16651787. The next prime is 16651799. The reversal of 16651797 is 79715661.

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

It is not a de Polignac number, because 16651797 - 2¹⁴ = 16635413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16651799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3738 + ... + 6875.

It is an arithmetic number, because the mean of its divisors is an integer number (2780868).

Almost surely, 2^16651797 is an apocalyptic number.

It is an amenable number.

16651797 is a deficient number, since it is larger than the sum of its proper divisors (5595147).

16651797 is a wasteful number, since it uses less digits than its factorization.

16651797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11139.

The product of its digits is 79380, while the sum is 42.

The square root of 16651797 is about 4080.6613434589. The cubic root of 16651797 is about 255.3604897563.

The spelling of 16651797 in words is "sixteen million, six hundred fifty-one thousand, seven hundred ninety-seven".