6607691 has 4 divisors (see below), whose sum is σ = 6620112. Its totient is φ = 6595272.

The previous prime is 6607673. The next prime is 6607697. The reversal of 6607691 is 1967066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1967066 = 2 ⋅983533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6607691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6607697) 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, 5375 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (1655028).

Almost surely, 2^6607691 is an apocalyptic number.

6607691 is a deficient number, since it is larger than the sum of its proper divisors (12421).

6607691 is a wasteful number, since it uses less digits than its factorization.

6607691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12420.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6607691 is about 2570.5429387583. The cubic root of 6607691 is about 187.6505788915.

The spelling of 6607691 in words is "six million, six hundred seven thousand, six hundred ninety-one".