16899961 has 8 divisors (see below), whose sum is σ = 18232704. Its totient is φ = 15571920.

The previous prime is 16899959. The next prime is 16899973. The reversal of 16899961 is 16999861.

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

It is not a de Polignac number, because 16899961 - 2¹ = 16899959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16899661) 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, 11130 + ... + 12556.

It is an arithmetic number, because the mean of its divisors is an integer number (2279088).

Almost surely, 2^16899961 is an apocalyptic number.

It is an amenable number.

16899961 is a deficient number, since it is larger than the sum of its proper divisors (1332743).

16899961 is a wasteful number, since it uses less digits than its factorization.

16899961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 209952, while the sum is 49.

The square root of 16899961 is about 4110.9562147997. The cubic root of 16899961 is about 256.6227969849.

The spelling of 16899961 in words is "sixteen million, eight hundred ninety-nine thousand, nine hundred sixty-one".