12646407 has 8 divisors (see below), whose sum is σ = 17443440. Its totient is φ = 8140160.

The previous prime is 12646391. The next prime is 12646411. The reversal of 12646407 is 70464621.

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 12646407 - 2⁴ = 12646391 is a prime.

It is a super-2 number, since 2×12646407² = 319863220019298, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646427) 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, 72594 + ... + 72767.

It is an arithmetic number, because the mean of its divisors is an integer number (2180430).

Almost surely, 2^12646407 is an apocalyptic number.

12646407 is a deficient number, since it is larger than the sum of its proper divisors (4797033).

12646407 is a wasteful number, since it uses less digits than its factorization.

12646407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145393.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 12646407 is about 3556.1787075455. The cubic root of 12646407 is about 232.9820084716.

The spelling of 12646407 in words is "twelve million, six hundred forty-six thousand, four hundred seven".