16900065 has 48 divisors (see below), whose sum is σ = 36062208. Its totient is φ = 7129728.

The previous prime is 16900061. The next prime is 16900067. The reversal of 16900065 is 56000961.

It is not a de Polignac number, because 16900065 - 2² = 16900061 is a prime.

It is a super-2 number, since 2×16900065² = 571224394008450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16900061) 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 47 ways as a sum of consecutive naturals, for example, 2032 + ... + 6158.

It is an arithmetic number, because the mean of its divisors is an integer number (751296).

Almost surely, 2^16900065 is an apocalyptic number.

16900065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16900065 is an abundant number, since it is smaller than the sum of its proper divisors (19162143).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16900065 is a wasteful number, since it uses less digits than its factorization.

16900065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16900065 is about 4110.9688639054. The cubic root of 16900065 is about 256.6233233907.

The spelling of 16900065 in words is "sixteen million, nine hundred thousand, sixty-five".