16214645 has 4 divisors (see below), whose sum is σ = 19457580. Its totient is φ = 12971712.

The previous prime is 16214633. The next prime is 16214659. The reversal of 16214645 is 54641261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10804369 + 5410276 = 3287^2 + 2326^2 .

It is a cyclic number.

It is not a de Polignac number, because 16214645 - 2²² = 12020341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1621460 + ... + 1621469.

It is an arithmetic number, because the mean of its divisors is an integer number (4864395).

Almost surely, 2^16214645 is an apocalyptic number.

It is an amenable number.

16214645 is a deficient number, since it is larger than the sum of its proper divisors (3242935).

16214645 is an equidigital number, since it uses as much as digits as its factorization.

16214645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242934.

The product of its digits is 5760, while the sum is 29.

The square root of 16214645 is about 4026.7412382720. The cubic root of 16214645 is about 253.1060239801.

The spelling of 16214645 in words is "sixteen million, two hundred fourteen thousand, six hundred forty-five".