16651427 has 8 divisors (see below), whose sum is σ = 17964576. Its totient is φ = 15342912.

The previous prime is 16651421. The next prime is 16651463. The reversal of 16651427 is 72415661.

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

It is not a de Polignac number, because 16651427 - 2⁸ = 16651171 is a prime.

It is a super-2 number, since 2×16651427² = 554540042272658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16651393 and 16651402.

It is not an unprimeable number, because it can be changed into a prime (16651421) 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, 11498 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (2245572).

Almost surely, 2^16651427 is an apocalyptic number.

16651427 is a deficient number, since it is larger than the sum of its proper divisors (1313149).

16651427 is a wasteful number, since it uses less digits than its factorization.

16651427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its digits is 10080, while the sum is 32.

The square root of 16651427 is about 4080.6160074185. The cubic root of 16651427 is about 255.3585983872.

The spelling of 16651427 in words is "sixteen million, six hundred fifty-one thousand, four hundred twenty-seven".