6691694 has 4 divisors (see below), whose sum is σ = 10037544. Its totient is φ = 3345846.

The previous prime is 6691687. The next prime is 6691697. The reversal of 6691694 is 4961966.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691697) 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 as a sum of consecutive naturals, namely, 1672922 + ... + 1672925.

It is an arithmetic number, because the mean of its divisors is an integer number (2509386).

Almost surely, 2^6691694 is an apocalyptic number.

6691694 is a deficient number, since it is larger than the sum of its proper divisors (3345850).

6691694 is a wasteful number, since it uses less digits than its factorization.

6691694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345849.

The product of its digits is 69984, while the sum is 41.

The square root of 6691694 is about 2586.8308796672. The cubic root of 6691694 is about 188.4424278959.

The spelling of 6691694 in words is "six million, six hundred ninety-one thousand, six hundred ninety-four".