12946537 has 4 divisors (see below), whose sum is σ = 13708116. Its totient is φ = 12184960.

The previous prime is 12946519. The next prime is 12946603. The reversal of 12946537 is 73564921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73564921 = 113 ⋅651017.

It can be written as a sum of positive squares in 2 ways, for example, as 11532816 + 1413721 = 3396^2 + 1189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12946537 is a prime.

It is a super-2 number, since 2×12946537² = 335225640584738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12946496 and 12946505.

It is not an unprimeable number, because it can be changed into a prime (12946517) 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, 380764 + ... + 380797.

It is an arithmetic number, because the mean of its divisors is an integer number (3427029).

Almost surely, 2^12946537 is an apocalyptic number.

12946537 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12946537 is a deficient number, since it is larger than the sum of its proper divisors (761579).

12946537 is an equidigital number, since it uses as much as digits as its factorization.

12946537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761578.

The product of its digits is 45360, while the sum is 37.

The square root of 12946537 is about 3598.1296530281. The cubic root of 12946537 is about 234.8106940811.

The spelling of 12946537 in words is "twelve million, nine hundred forty-six thousand, five hundred thirty-seven".