21698314 has 8 divisors (see below), whose sum is σ = 35506368. Its totient is φ = 9862860.

The previous prime is 21698311. The next prime is 21698321. The reversal of 21698314 is 41389612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21698314.

It is not an unprimeable number, because it can be changed into a prime (21698311) 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 3 ways as a sum of consecutive naturals, for example, 493122 + ... + 493165.

It is an arithmetic number, because the mean of its divisors is an integer number (4438296).

Almost surely, 2^21698314 is an apocalyptic number.

21698314 is a deficient number, since it is larger than the sum of its proper divisors (13808054).

21698314 is a wasteful number, since it uses less digits than its factorization.

21698314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986300.

The product of its digits is 10368, while the sum is 34.

The square root of 21698314 is about 4658.1449097253. The cubic root of 21698314 is about 278.9172212809.

The spelling of 21698314 in words is "twenty-one million, six hundred ninety-eight thousand, three hundred fourteen".