12670157 has 4 divisors (see below), whose sum is σ = 12741120. Its totient is φ = 12599196.

The previous prime is 12670139. The next prime is 12670183. The reversal of 12670157 is 75107621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12670157 - 2¹⁸ = 12408013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12679157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35213 + ... + 35570.

It is an arithmetic number, because the mean of its divisors is an integer number (3185280).

Almost surely, 2^12670157 is an apocalyptic number.

It is an amenable number.

12670157 is a deficient number, since it is larger than the sum of its proper divisors (70963).

12670157 is an equidigital number, since it uses as much as digits as its factorization.

12670157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70962.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 12670157 is about 3559.5163997375. The cubic root of 12670157 is about 233.1277642963.

Adding to 12670157 its reverse (75107621), we get a palindrome (87777778).

The spelling of 12670157 in words is "twelve million, six hundred seventy thousand, one hundred fifty-seven".