16812645 has 16 divisors (see below), whose sum is σ = 27303360. Its totient is φ = 8832384.

The previous prime is 16812623. The next prime is 16812661. The reversal of 16812645 is 54621861.

It is not a de Polignac number, because 16812645 - 2¹¹ = 16810597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7360 + ... + 9369.

It is an arithmetic number, because the mean of its divisors is an integer number (1706460).

Almost surely, 2^16812645 is an apocalyptic number.

16812645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16812645 is a deficient number, since it is larger than the sum of its proper divisors (10490715).

16812645 is a wasteful number, since it uses less digits than its factorization.

16812645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16804.

The product of its digits is 11520, while the sum is 33.

The square root of 16812645 is about 4100.3225482881. The cubic root of 16812645 is about 256.1800745156.

The spelling of 16812645 in words is "sixteen million, eight hundred twelve thousand, six hundred forty-five".