16986069 has 6 divisors (see below), whose sum is σ = 24535446. Its totient is φ = 11324040.

The previous prime is 16986061. The next prime is 16986091. The reversal of 16986069 is 96068961.

It can be written as a sum of positive squares in only one way, i.e., 16305444 + 680625 = 4038^2 + 825^2 .

It is not a de Polignac number, because 16986069 - 2³ = 16986061 is a prime.

It is a super-2 number, since 2×16986069² = 577053080145522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16986061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 943662 + ... + 943679.

It is an arithmetic number, because the mean of its divisors is an integer number (4089241).

Almost surely, 2^16986069 is an apocalyptic number.

It is an amenable number.

16986069 is a deficient number, since it is larger than the sum of its proper divisors (7549377).

16986069 is a wasteful number, since it uses less digits than its factorization.

16986069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887347 (or 1887344 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 16986069 is about 4121.4158974799. The cubic root of 16986069 is about 257.0579035503.

The spelling of 16986069 in words is "sixteen million, nine hundred eighty-six thousand, sixty-nine".