16864375 has 30 divisors (see below), whose sum is σ = 23267552. Its totient is φ = 12210000.

The previous prime is 16864373. The next prime is 16864409. The reversal of 16864375 is 57346861.

16864375 = T₂₀ + T₂₁ + ... + T₄₆₅.

It is a happy number.

It is not a de Polignac number, because 16864375 - 2¹ = 16864373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864373) 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 29 ways as a sum of consecutive naturals, for example, 75514 + ... + 75736.

Almost surely, 2^16864375 is an apocalyptic number.

16864375 is a deficient number, since it is larger than the sum of its proper divisors (6403177).

16864375 is an equidigital number, since it uses as much as digits as its factorization.

16864375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 239 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 16864375 is about 4106.6257438437. The cubic root of 16864375 is about 256.4425481233.

The spelling of 16864375 in words is "sixteen million, eight hundred sixty-four thousand, three hundred seventy-five".