6680642 has 8 divisors (see below), whose sum is σ = 10039296. Its totient is φ = 3334212.

The previous prime is 6680621. The next prime is 6680651. The reversal of 6680642 is 2460866.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6680599 and 6680608.

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, 1538 + ... + 3965.

It is an arithmetic number, because the mean of its divisors is an integer number (1254912).

Almost surely, 2^6680642 is an apocalyptic number.

6680642 is a deficient number, since it is larger than the sum of its proper divisors (3358654).

6680642 is a wasteful number, since it uses less digits than its factorization.

6680642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 6680642 is about 2584.6937923089. The cubic root of 6680642 is about 188.3386269081.

It can be divided in two parts, 66 and 80642, that added together give a palindrome (80708).

The spelling of 6680642 in words is "six million, six hundred eighty thousand, six hundred forty-two".