12456660 has 48 divisors (see below), whose sum is σ = 36086400. Its totient is φ = 3206784.

The previous prime is 12456649. The next prime is 12456667. The reversal of 12456660 is 6665421.

12456660 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840 + ... + 5319.

It is an arithmetic number, because the mean of its divisors is an integer number (751800).

Almost surely, 2^12456660 is an apocalyptic number.

12456660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12456660 is an abundant number, since it is smaller than the sum of its proper divisors (23629740).

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

12456660 is a wasteful number, since it uses less digits than its factorization.

12456660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7200 (or 7198 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 12456660 is about 3529.3993823312. The cubic root of 12456660 is about 231.8109091424.

The spelling of 12456660 in words is "twelve million, four hundred fifty-six thousand, six hundred sixty".