12840698 has 8 divisors (see below), whose sum is σ = 20742708. Its totient is φ = 5926464.

The previous prime is 12840697. The next prime is 12840743. The reversal of 12840698 is 89604821.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 2809 = 3583^2 + 53^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12840691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246911 + ... + 246962.

Almost surely, 2^12840698 is an apocalyptic number.

12840698 is a deficient number, since it is larger than the sum of its proper divisors (7902010).

12840698 is a wasteful number, since it uses less digits than its factorization.

12840698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493888.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 12840698 is about 3583.3919685125. The cubic root of 12840698 is about 234.1690769175.

The spelling of 12840698 in words is "twelve million, eight hundred forty thousand, six hundred ninety-eight".