6651516 has 12 divisors (see below), whose sum is σ = 15520232. Its totient is φ = 2217168.

The previous prime is 6651503. The next prime is 6651517. The reversal of 6651516 is 6151566.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651517) 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, 277135 + ... + 277158.

Almost surely, 2^6651516 is an apocalyptic number.

It is an amenable number.

6651516 is an abundant number, since it is smaller than the sum of its proper divisors (8868716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6651516 is a wasteful number, since it uses less digits than its factorization.

6651516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554300 (or 554298 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 6651516 is about 2579.0533146874. The cubic root of 6651516 is about 188.0645244037.

The spelling of 6651516 in words is "six million, six hundred fifty-one thousand, five hundred sixteen".