12940765 has 8 divisors (see below), whose sum is σ = 15792480. Its totient is φ = 10176912.

The previous prime is 12940751. The next prime is 12940769. The reversal of 12940765 is 56704921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12940765 - 2⁹ = 12940253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12940765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12940769) 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, 21639 + ... + 22228.

It is an arithmetic number, because the mean of its divisors is an integer number (1974060).

Almost surely, 2^12940765 is an apocalyptic number.

It is an amenable number.

12940765 is a deficient number, since it is larger than the sum of its proper divisors (2851715).

12940765 is an equidigital number, since it uses as much as digits as its factorization.

12940765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43931.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 12940765 is about 3597.3274802275. The cubic root of 12940765 is about 234.7757934022.

The spelling of 12940765 in words is "twelve million, nine hundred forty thousand, seven hundred sixty-five".