12540655 has 8 divisors (see below), whose sum is σ = 15068592. Its totient is φ = 10019328.

The previous prime is 12540653. The next prime is 12540667. The reversal of 12540655 is 55604521.

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 12540655 - 2¹ = 12540653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540653) 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, 4879 + ... + 6991.

It is an arithmetic number, because the mean of its divisors is an integer number (1883574).

Almost surely, 2^12540655 is an apocalyptic number.

12540655 is a deficient number, since it is larger than the sum of its proper divisors (2527937).

12540655 is a wasteful number, since it uses less digits than its factorization.

12540655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 12540655 is about 3541.2787238510. The cubic root of 12540655 is about 232.3307744577.

The spelling of 12540655 in words is "twelve million, five hundred forty thousand, six hundred fifty-five".