12761091 has 32 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 7236000.

The previous prime is 12761083. The next prime is 12761123. The reversal of 12761091 is 19016721.

It is not a de Polignac number, because 12761091 - 2³ = 12761083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12761011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47305 + ... + 47573.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^12761091 is an apocalyptic number.

12761091 is a deficient number, since it is larger than the sum of its proper divisors (9011709).

12761091 is a wasteful number, since it uses less digits than its factorization.

12761091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 12761091 is about 3572.2669273166. The cubic root of 12761091 is about 233.6841563906.

The spelling of 12761091 in words is "twelve million, seven hundred sixty-one thousand, ninety-one".