12630979 has 12 divisors (see below), whose sum is σ = 13671216. Its totient is φ = 11647328.

The previous prime is 12630977. The next prime is 12630997. The reversal of 12630979 is 97903621.

12630979 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12630979 - 2¹ = 12630977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12630977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19017 + ... + 19669.

It is an arithmetic number, because the mean of its divisors is an integer number (1139268).

Almost surely, 2^12630979 is an apocalyptic number.

12630979 is a deficient number, since it is larger than the sum of its proper divisors (1040237).

12630979 is an equidigital number, since it uses as much as digits as its factorization.

12630979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 12630979 is about 3554.0088632416. The cubic root of 12630979 is about 232.8872276878.

The spelling of 12630979 in words is "twelve million, six hundred thirty thousand, nine hundred seventy-nine".