12791624 has 8 divisors (see below), whose sum is σ = 23984310. Its totient is φ = 6395808.

The previous prime is 12791621. The next prime is 12791627. The reversal of 12791624 is 42619721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12791621) and next prime (12791627).

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 611524 = 3490^2 + 782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12791621) 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 as a sum of consecutive naturals, namely, 799469 + ... + 799484.

Almost surely, 2^12791624 is an apocalyptic number.

It is an amenable number.

12791624 is a deficient number, since it is larger than the sum of its proper divisors (11192686).

12791624 is a wasteful number, since it uses less digits than its factorization.

12791624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598959 (or 1598955 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 12791624 is about 3576.5379908509. The cubic root of 12791624 is about 233.8703838138.

The spelling of 12791624 in words is "twelve million, seven hundred ninety-one thousand, six hundred twenty-four".