6642088646 has 8 divisors (see below), whose sum is σ = 9976839600. Its totient is φ = 3316475448.

The previous prime is 6642088627. The next prime is 6642088657. The reversal of 6642088646 is 6468802466.

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

It is a super-2 number, since 2×6642088646² = 88234683162644226632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6642088594 and 6642088603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282621 + ... + 2285528.

It is an arithmetic number, because the mean of its divisors is an integer number (1247104950).

Almost surely, 2^6642088646 is an apocalyptic number.

6642088646 is a deficient number, since it is larger than the sum of its proper divisors (3334750954).

6642088646 is a wasteful number, since it uses less digits than its factorization.

6642088646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568878.

The product of its (nonzero) digits is 2654208, while the sum is 50.

The square root of 6642088646 is about 81499.0100921477. The cubic root of 6642088646 is about 1879.7563293286.

The spelling of 6642088646 in words is "six billion, six hundred forty-two million, eighty-eight thousand, six hundred forty-six".