12651406 has 4 divisors (see below), whose sum is σ = 18977112. Its totient is φ = 6325702.

The previous prime is 12651389. The next prime is 12651407. The reversal of 12651406 is 60415621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162850 + ... + 3162853.

It is an arithmetic number, because the mean of its divisors is an integer number (4744278).

Almost surely, 2^12651406 is an apocalyptic number.

12651406 is a deficient number, since it is larger than the sum of its proper divisors (6325706).

12651406 is an equidigital number, since it uses as much as digits as its factorization.

12651406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325705.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 12651406 is about 3556.8814992912. The cubic root of 12651406 is about 233.0127029245.

The spelling of 12651406 in words is "twelve million, six hundred fifty-one thousand, four hundred six".