16980691 has 8 divisors (see below), whose sum is σ = 20899424. Its totient is φ = 13435200.

The previous prime is 16980679. The next prime is 16980697. The reversal of 16980691 is 19608961.

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 16980691 - 2¹⁵ = 16947923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16980697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93210 + ... + 93391.

It is an arithmetic number, because the mean of its divisors is an integer number (2612428).

Almost surely, 2^16980691 is an apocalyptic number.

16980691 is a deficient number, since it is larger than the sum of its proper divisors (3918733).

16980691 is a wasteful number, since it uses less digits than its factorization.

16980691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186621.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 16980691 is about 4120.7634001481. The cubic root of 16980691 is about 257.0307714471.

It can be divided in two parts, 16980 and 691, that added together give a palindrome (17671).

The spelling of 16980691 in words is "sixteen million, nine hundred eighty thousand, six hundred ninety-one".