12969620 has 12 divisors (see below), whose sum is σ = 27236244. Its totient is φ = 5187840.

The previous prime is 12969611. The next prime is 12969661. The reversal of 12969620 is 2696921.

12969620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3556996 + 9412624 = 1886^2 + 3068^2 .

It is a super-2 number, since 2×12969620² = 336422085888800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324221 + ... + 324260.

It is an arithmetic number, because the mean of its divisors is an integer number (2269687).

Almost surely, 2^12969620 is an apocalyptic number.

12969620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12969620 is an abundant number, since it is smaller than the sum of its proper divisors (14266624).

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

12969620 is a wasteful number, since it uses less digits than its factorization.

12969620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648490 (or 648488 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 12969620 is about 3601.3358632596. The cubic root of 12969620 is about 234.9501629642.

The spelling of 12969620 in words is "twelve million, nine hundred sixty-nine thousand, six hundred twenty".