12628619 has 4 divisors (see below), whose sum is σ = 12635760. Its totient is φ = 12621480.

The previous prime is 12628613. The next prime is 12628657. The reversal of 12628619 is 91682621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12628619 is a prime.

It is a super-2 number, since 2×12628619² = 318964035694322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12628613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (3158940).

Almost surely, 2^12628619 is an apocalyptic number.

12628619 is a deficient number, since it is larger than the sum of its proper divisors (7141).

12628619 is an equidigital number, since it uses as much as digits as its factorization.

12628619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its digits is 10368, while the sum is 35.

The square root of 12628619 is about 3553.6768283005. The cubic root of 12628619 is about 232.8727223965.

The spelling of 12628619 in words is "twelve million, six hundred twenty-eight thousand, six hundred nineteen".