12634522 has 4 divisors (see below), whose sum is σ = 18951786. Its totient is φ = 6317260.

The previous prime is 12634481. The next prime is 12634537. The reversal of 12634522 is 22543621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22543621 = 4363 ⋅5167.

It can be written as a sum of positive squares in only one way, i.e., 6974881 + 5659641 = 2641^2 + 2379^2 .

It is a super-2 number, since 2×12634522² = 319262292336968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3158629 + ... + 3158632.

Almost surely, 2^12634522 is an apocalyptic number.

12634522 is a deficient number, since it is larger than the sum of its proper divisors (6317264).

12634522 is an equidigital number, since it uses as much as digits as its factorization.

12634522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317263.

The product of its digits is 2880, while the sum is 25.

The square root of 12634522 is about 3554.5072794974. The cubic root of 12634522 is about 232.9090006718.

Subtracting 12634522 from its reverse (22543621), we obtain a palindrome (9909099).

The spelling of 12634522 in words is "twelve million, six hundred thirty-four thousand, five hundred twenty-two".