12698556 has 24 divisors (see below), whose sum is σ = 31909584. Its totient is φ = 3907200.

The previous prime is 12698551. The next prime is 12698573. The reversal of 12698556 is 65589621.

12698556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12698556² = 322506648970272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12698551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40545 + ... + 40856.

It is an arithmetic number, because the mean of its divisors is an integer number (1329566).

Almost surely, 2^12698556 is an apocalyptic number.

It is an amenable number.

12698556 is an abundant number, since it is smaller than the sum of its proper divisors (19211028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12698556 is a wasteful number, since it uses less digits than its factorization.

12698556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81421 (or 81419 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 12698556 is about 3563.5033323964. The cubic root of 12698556 is about 233.3018125221.

The spelling of 12698556 in words is "twelve million, six hundred ninety-eight thousand, five hundred fifty-six".