12611956 has 24 divisors (see below), whose sum is σ = 25401600. Its totient is φ = 5367072.

The previous prime is 12611939. The next prime is 12611957. The reversal of 12611956 is 65911621.

It is a super-2 number, since 2×12611956² = 318122868291872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611957) 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, 2661 + ... + 5683.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^12611956 is an apocalyptic number.

It is an amenable number.

12611956 is an abundant number, since it is smaller than the sum of its proper divisors (12789644).

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

12611956 is a wasteful number, since it uses less digits than its factorization.

12611956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3181 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 12611956 is about 3551.3315812523. The cubic root of 12611956 is about 232.7702549747.

The spelling of 12611956 in words is "twelve million, six hundred eleven thousand, nine hundred fifty-six".