12757406 has 4 divisors (see below), whose sum is σ = 19136112. Its totient is φ = 6378702.

The previous prime is 12757391. The next prime is 12757421. The reversal of 12757406 is 60475721.

12757406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12757391) and next prime (12757421).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189350 + ... + 3189353.

It is an arithmetic number, because the mean of its divisors is an integer number (4784028).

Almost surely, 2^12757406 is an apocalyptic number.

12757406 is a deficient number, since it is larger than the sum of its proper divisors (6378706).

12757406 is an equidigital number, since it uses as much as digits as its factorization.

12757406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6378705.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 12757406 is about 3571.7511111498. The cubic root of 12757406 is about 233.6616606907.

The spelling of 12757406 in words is "twelve million, seven hundred fifty-seven thousand, four hundred six".