12690898 has 32 divisors (see below), whose sum is σ = 22155840. Its totient is φ = 5391360.

The previous prime is 12690883. The next prime is 12690901. The reversal of 12690898 is 89809621.

It is a happy number.

It is a super-2 number, since 2×12690898² = 322117784092808, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40390 + ... + 40702.

It is an arithmetic number, because the mean of its divisors is an integer number (692370).

Almost surely, 2^12690898 is an apocalyptic number.

12690898 is a deficient number, since it is larger than the sum of its proper divisors (9464942).

12690898 is a wasteful number, since it uses less digits than its factorization.

12690898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 12690898 is about 3562.4286659525. The cubic root of 12690898 is about 233.2549047071.

The spelling of 12690898 in words is "twelve million, six hundred ninety thousand, eight hundred ninety-eight".