12537974 has 4 divisors (see below), whose sum is σ = 18806964. Its totient is φ = 6268986.

The previous prime is 12537971. The next prime is 12537977. The reversal of 12537974 is 47973521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12537971) and next prime (12537977).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12537971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134492 + ... + 3134495.

It is an arithmetic number, because the mean of its divisors is an integer number (4701741).

Almost surely, 2^12537974 is an apocalyptic number.

12537974 is a deficient number, since it is larger than the sum of its proper divisors (6268990).

12537974 is an equidigital number, since it uses as much as digits as its factorization.

12537974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268989.

The product of its digits is 52920, while the sum is 38.

The square root of 12537974 is about 3540.9001680364. The cubic root of 12537974 is about 232.3142170238.

The spelling of 12537974 in words is "twelve million, five hundred thirty-seven thousand, nine hundred seventy-four".