12639607 has 8 divisors (see below), whose sum is σ = 13042512. Its totient is φ = 12240000.

The previous prime is 12639577. The next prime is 12639637. The reversal of 12639607 is 70693621.

It is an interprime number because it is at equal distance from previous prime (12639577) and next prime (12639637).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12639607 - 2⁷ = 12639479 is a prime.

It is a super-2 number, since 2×12639607² = 319519330228898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12639637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8607 + ... + 9967.

It is an arithmetic number, because the mean of its divisors is an integer number (1630314).

Almost surely, 2^12639607 is an apocalyptic number.

12639607 is a deficient number, since it is larger than the sum of its proper divisors (402905).

12639607 is a wasteful number, since it uses less digits than its factorization.

12639607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 12639607 is about 3555.2224965535. Note that the first 3 decimals coincide. The cubic root of 12639607 is about 232.9402426773.

The spelling of 12639607 in words is "twelve million, six hundred thirty-nine thousand, six hundred seven".