6626406642 has 16 divisors (see below), whose sum is σ = 14032390752. Its totient is φ = 2078872640.

The previous prime is 6626406629. The next prime is 6626406653. The reversal of 6626406642 is 2466046266.

It is a junction number, because it is equal to n+sod(n) for n = 6626406594 and 6626406603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32482284 + ... + 32482487.

It is an arithmetic number, because the mean of its divisors is an integer number (877024422).

Almost surely, 2^6626406642 is an apocalyptic number.

6626406642 is an abundant number, since it is smaller than the sum of its proper divisors (7405984110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6626406642 is a wasteful number, since it uses less digits than its factorization.

6626406642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64964793.

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 6626406642 is about 81402.7434549967. The cubic root of 6626406642 is about 1878.2757922148.

The spelling of 6626406642 in words is "six billion, six hundred twenty-six million, four hundred six thousand, six hundred forty-two".