12712660 has 24 divisors (see below), whose sum is σ = 26772480. Its totient is φ = 5070624.

The previous prime is 12712657. The next prime is 12712663. The reversal of 12712660 is 6621721.

It is an interprime number because it is at equal distance from previous prime (12712657) and next prime (12712663).

It is a super-2 number, since 2×12712660² = 323223448551200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8917 + ... + 10243.

It is an arithmetic number, because the mean of its divisors is an integer number (1115520).

Almost surely, 2^12712660 is an apocalyptic number.

12712660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12712660 is an abundant number, since it is smaller than the sum of its proper divisors (14059820).

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

12712660 is a wasteful number, since it uses less digits than its factorization.

12712660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12712660 is about 3565.4817346328. The cubic root of 12712660 is about 233.3881549191.

The spelling of 12712660 in words is "twelve million, seven hundred twelve thousand, six hundred sixty".