It is an unprimeable number.
21213698 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1213698 is a wasteful number, since it uses less digits than its factorization.
1213698 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 258.
The square root of 1213698 is about 1101.6796267518. The cubic root of 1213698 is about 106.6686696672.
The spelling of 1213698 in words is "one million, two hundred thirteen thousand, six hundred ninety-eight".