12607640 has 64 divisors (see below), whose sum is σ = 30520800. Its totient is φ = 4672512.

The previous prime is 12607631. The next prime is 12607667. The reversal of 12607640 is 4670621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40124 + ... + 40436.

Almost surely, 2^12607640 is an apocalyptic number.

12607640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12607640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15260400).

12607640 is an abundant number, since it is smaller than the sum of its proper divisors (17913160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12607640 is a wasteful number, since it uses less digits than its factorization.

12607640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12607640 is about 3550.7238698609. The cubic root of 12607640 is about 232.7436994575.

The spelling of 12607640 in words is "twelve million, six hundred seven thousand, six hundred forty".