16864995 has 16 divisors (see below), whose sum is σ = 30839040. Its totient is φ = 7709664.

The previous prime is 16864993. The next prime is 16864997. The reversal of 16864995 is 59946861.

It is an interprime number because it is at equal distance from previous prime (16864993) and next prime (16864997).

It is not a de Polignac number, because 16864995 - 2¹ = 16864993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16864993) 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 15 ways as a sum of consecutive naturals, for example, 80205 + ... + 80414.

It is an arithmetic number, because the mean of its divisors is an integer number (1927440).

Almost surely, 2^16864995 is an apocalyptic number.

16864995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16864995 is a deficient number, since it is larger than the sum of its proper divisors (13974045).

16864995 is a wasteful number, since it uses less digits than its factorization.

16864995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160634.

The product of its digits is 466560, while the sum is 48.

The square root of 16864995 is about 4106.7012309151. The cubic root of 16864995 is about 256.4456906932.

The spelling of 16864995 in words is "sixteen million, eight hundred sixty-four thousand, nine hundred ninety-five".