6690616 has 8 divisors (see below), whose sum is σ = 12544920. Its totient is φ = 3345304.

The previous prime is 6690611. The next prime is 6690623. The reversal of 6690616 is 6160966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418156 + ... + 418171.

It is an arithmetic number, because the mean of its divisors is an integer number (1568115).

Almost surely, 2^6690616 is an apocalyptic number.

It is an amenable number.

6690616 is a deficient number, since it is larger than the sum of its proper divisors (5854304).

6690616 is a wasteful number, since it uses less digits than its factorization.

6690616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836333 (or 836329 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 6690616 is about 2586.6225082141. The cubic root of 6690616 is about 188.4323082936.

The spelling of 6690616 in words is "six million, six hundred ninety thousand, six hundred sixteen".