12611980 has 24 divisors (see below), whose sum is σ = 27050688. Its totient is φ = 4937088.

The previous prime is 12611957. The next prime is 12611987. The reversal of 12611980 is 8911621.

It is a happy number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12611987) 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, 5769 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (1127112).

Almost surely, 2^12611980 is an apocalyptic number.

12611980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12611980 is an abundant number, since it is smaller than the sum of its proper divisors (14438708).

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

12611980 is a wasteful number, since it uses less digits than its factorization.

12611980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13473 (or 13471 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12611980 is about 3551.3349602649. The cubic root of 12611980 is about 232.7704026251.

The spelling of 12611980 in words is "twelve million, six hundred eleven thousand, nine hundred eighty".