16631427 has 8 divisors (see below), whose sum is σ = 22299840. Its totient is φ = 11025320.

The previous prime is 16631401. The next prime is 16631429. The reversal of 16631427 is 72413661.

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 16631427 - 2¹⁹ = 16107139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16631394 and 16631403.

It is not an unprimeable number, because it can be changed into a prime (16631429) 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, 14949 + ... + 16022.

It is an arithmetic number, because the mean of its divisors is an integer number (2787480).

Almost surely, 2^16631427 is an apocalyptic number.

16631427 is a deficient number, since it is larger than the sum of its proper divisors (5668413).

16631427 is a wasteful number, since it uses less digits than its factorization.

16631427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31153.

The product of its digits is 6048, while the sum is 30.

The square root of 16631427 is about 4078.1646607267. The cubic root of 16631427 is about 255.2563205050.

The spelling of 16631427 in words is "sixteen million, six hundred thirty-one thousand, four hundred twenty-seven".