6671611 has 4 divisors (see below), whose sum is σ = 6677824. Its totient is φ = 6665400.

The previous prime is 6671597. The next prime is 6671617. The reversal of 6671611 is 1161766.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6671611 - 2⁹ = 6671099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6671611.

It is not an unprimeable number, because it can be changed into a prime (6671617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035 + ... + 3796.

It is an arithmetic number, because the mean of its divisors is an integer number (1669456).

Almost surely, 2^6671611 is an apocalyptic number.

6671611 is the 1381-st nonagonal number.

6671611 is a deficient number, since it is larger than the sum of its proper divisors (6213).

6671611 is a wasteful number, since it uses less digits than its factorization.

6671611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6212.

The product of its digits is 1512, while the sum is 28.

The square root of 6671611 is about 2582.9461860441. The cubic root of 6671611 is about 188.2537222365.

It can be divided in two parts, 667 and 1611, that added together give a triangular number (2278 = T₆₇).

The spelling of 6671611 in words is "six million, six hundred seventy-one thousand, six hundred eleven".