6671605 has 8 divisors (see below), whose sum is σ = 8021664. Its totient is φ = 5326800.

The previous prime is 6671597. The next prime is 6671617. The reversal of 6671605 is 5061766.

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

It is not a de Polignac number, because 6671605 - 2³ = 6671597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 4420.

It is an arithmetic number, because the mean of its divisors is an integer number (1002708).

Almost surely, 2^6671605 is an apocalyptic number.

It is an amenable number.

6671605 is a deficient number, since it is larger than the sum of its proper divisors (1350059).

6671605 is a wasteful number, since it uses less digits than its factorization.

6671605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 6671605 is about 2582.9450245795. The cubic root of 6671605 is about 188.2536658022.

The spelling of 6671605 in words is "six million, six hundred seventy-one thousand, six hundred five".