12761811 has 6 divisors (see below), whose sum is σ = 18433740. Its totient is φ = 8507868.

The previous prime is 12761807. The next prime is 12761813. The reversal of 12761811 is 11816721.

It is not a de Polignac number, because 12761811 - 2² = 12761807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12761813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708981 + ... + 708998.

It is an arithmetic number, because the mean of its divisors is an integer number (3072290).

Almost surely, 2^12761811 is an apocalyptic number.

12761811 is a deficient number, since it is larger than the sum of its proper divisors (5671929).

12761811 is a wasteful number, since it uses less digits than its factorization.

12761811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417985 (or 1417982 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 12761811 is about 3572.3677022390. The cubic root of 12761811 is about 233.6885512454.

The spelling of 12761811 in words is "twelve million, seven hundred sixty-one thousand, eight hundred eleven".