12740465 has 16 divisors (see below), whose sum is σ = 15652560. Its totient is φ = 9953280.

The previous prime is 12740461. The next prime is 12740467. The reversal of 12740465 is 56404721.

12740465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 237169 + 12503296 = 487^2 + 3536^2 .

It is not a de Polignac number, because 12740465 - 2² = 12740461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12740461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52745 + ... + 52985.

It is an arithmetic number, because the mean of its divisors is an integer number (978285).

Almost surely, 2^12740465 is an apocalyptic number.

It is an amenable number.

12740465 is a deficient number, since it is larger than the sum of its proper divisors (2912095).

12740465 is a wasteful number, since it uses less digits than its factorization.

12740465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 12740465 is about 3569.3787974940. The cubic root of 12740465 is about 233.5581857450.

The spelling of 12740465 in words is "twelve million, seven hundred forty thousand, four hundred sixty-five".