16631000 has 32 divisors (see below), whose sum is σ = 38918880. Its totient is φ = 6652000.

The previous prime is 16630987. The next prime is 16631011. The reversal of 16631000 is 13661.

It is a super-2 number, since 2×16631000² = 553180322000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16631000.

It is a congruent number.

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, 7316 + ... + 9315.

It is an arithmetic number, because the mean of its divisors is an integer number (1216215).

Almost surely, 2^16631000 is an apocalyptic number.

16631000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16631000 is an abundant number, since it is smaller than the sum of its proper divisors (22287880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16631000 is a wasteful number, since it uses less digits than its factorization.

16631000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652 (or 16638 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 16631000 is about 4078.1123084094. The cubic root of 16631000 is about 255.2541359784.

Adding to 16631000 its reverse (13661), we get a palindrome (16644661).

The spelling of 16631000 in words is "sixteen million, six hundred thirty-one thousand".