12457655 has 8 divisors (see below), whose sum is σ = 17084832. Its totient is φ = 8542368.

The previous prime is 12457639. The next prime is 12457657. The reversal of 12457655 is 55675421.

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 12457655 - 2⁴ = 12457639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 355933 = 12457655 / (1 + 2 + 4 + 5 + 7 + 6 + 5 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12457657) 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, 177932 + ... + 178001.

It is an arithmetic number, because the mean of its divisors is an integer number (2135604).

Almost surely, 2^12457655 is an apocalyptic number.

12457655 is a deficient number, since it is larger than the sum of its proper divisors (4627177).

12457655 is an equidigital number, since it uses as much as digits as its factorization.

12457655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355945.

The product of its digits is 42000, while the sum is 35.

The square root of 12457655 is about 3529.5403383444. The cubic root of 12457655 is about 231.8170810941.

The spelling of 12457655 in words is "twelve million, four hundred fifty-seven thousand, six hundred fifty-five".