6904661 has 4 divisors (see below), whose sum is σ = 7127424. Its totient is φ = 6681900.

The previous prime is 6904649. The next prime is 6904691. The reversal of 6904661 is 1664096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6904661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111335 + ... + 111396.

It is an arithmetic number, because the mean of its divisors is an integer number (1781856).

Almost surely, 2^6904661 is an apocalyptic number.

It is an amenable number.

6904661 is a deficient number, since it is larger than the sum of its proper divisors (222763).

6904661 is a wasteful number, since it uses less digits than its factorization.

6904661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222762.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6904661 is about 2627.6721637221. The cubic root of 6904661 is about 190.4206837480.

The spelling of 6904661 in words is "six million, nine hundred four thousand, six hundred sixty-one".