12545670 has 16 divisors (see below), whose sum is σ = 30109680. Its totient is φ = 3345504.

The previous prime is 12545647. The next prime is 12545671. The reversal of 12545670 is 7654521.

It is a super-3 number, since 3×12545670³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 418189 = 12545670 / (1 + 2 + 5 + 4 + 5 + 6 + 7 + 0).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545671) 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, 209065 + ... + 209124.

It is an arithmetic number, because the mean of its divisors is an integer number (1881855).

Almost surely, 2^12545670 is an apocalyptic number.

12545670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12545670 is an abundant number, since it is smaller than the sum of its proper divisors (17564010).

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

12545670 is a wasteful number, since it uses less digits than its factorization.

12545670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418199.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 12545670 is about 3541.9867306358. The cubic root of 12545670 is about 232.3617399736.

The spelling of 12545670 in words is "twelve million, five hundred forty-five thousand, six hundred seventy".