16990587 has 8 divisors (see below), whose sum is σ = 25171280. Its totient is φ = 11327040.

The previous prime is 16990577. The next prime is 16990591. The reversal of 16990587 is 78509961.

16990587 is a `hidden beast` number, since 1 + 69 + 9 + 0 + 587 = 666.

It is not a de Polignac number, because 16990587 - 2⁷ = 16990459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16990507) 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, 314614 + ... + 314667.

It is an arithmetic number, because the mean of its divisors is an integer number (3146410).

Almost surely, 2^16990587 is an apocalyptic number.

16990587 is a deficient number, since it is larger than the sum of its proper divisors (8180693).

16990587 is an equidigital number, since it uses as much as digits as its factorization.

16990587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629290 (or 629284 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 16990587 is about 4121.9639736417. The cubic root of 16990587 is about 257.0806925125.

The spelling of 16990587 in words is "sixteen million, nine hundred ninety thousand, five hundred eighty-seven".