16860069 has 12 divisors (see below), whose sum is σ = 25255776. Its totient is φ = 11239884.

The previous prime is 16860047. The next prime is 16860079. The reversal of 16860069 is 96006861.

It is not a de Polignac number, because 16860069 - 2⁵ = 16860037 is a prime.

It is a super-2 number, since 2×16860069² = 568523853369522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16860029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34449 + ... + 34934.

It is an arithmetic number, because the mean of its divisors is an integer number (2104648).

Almost surely, 2^16860069 is an apocalyptic number.

It is an amenable number.

16860069 is a deficient number, since it is larger than the sum of its proper divisors (8395707).

16860069 is an frugal number, since it uses more digits than its factorization.

16860069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69398 (or 69386 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 16860069 is about 4106.1014356686. The cubic root of 16860069 is about 256.4207203431.

The spelling of 16860069 in words is "sixteen million, eight hundred sixty thousand, sixty-nine".