16888961 has 8 divisors (see below), whose sum is σ = 17187240. Its totient is φ = 16593408.

The previous prime is 16888957. The next prime is 16888997. The reversal of 16888961 is 16988861.

It can be written as a sum of positive squares in 4 ways, for example, as 78961 + 16810000 = 281^2 + 4100^2 .

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 16888961 - 2² = 16888957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16888901) 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, 14675 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (2148405).

Almost surely, 2^16888961 is an apocalyptic number.

It is an amenable number.

16888961 is a deficient number, since it is larger than the sum of its proper divisors (298279).

16888961 is a wasteful number, since it uses less digits than its factorization.

16888961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363.

The product of its digits is 165888, while the sum is 47.

The square root of 16888961 is about 4109.6181087785. The cubic root of 16888961 is about 256.5671072421.

The spelling of 16888961 in words is "sixteen million, eight hundred eighty-eight thousand, nine hundred sixty-one".