6691628 has 12 divisors (see below), whose sum is σ = 11796792. Its totient is φ = 3321120.

The previous prime is 6691613. The next prime is 6691631. The reversal of 6691628 is 8261966.

It is a junction number, because it is equal to n+sod(n) for n = 6691591 and 6691600.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5558 + ... + 6653.

It is an arithmetic number, because the mean of its divisors is an integer number (983066).

Almost surely, 2^6691628 is an apocalyptic number.

It is an amenable number.

6691628 is a deficient number, since it is larger than the sum of its proper divisors (5105164).

6691628 is a wasteful number, since it uses less digits than its factorization.

6691628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12352 (or 12350 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 6691628 is about 2586.8181227137. The cubic root of 6691628 is about 188.4418083597.

The spelling of 6691628 in words is "six million, six hundred ninety-one thousand, six hundred twenty-eight".