6551646 has 16 divisors (see below), whose sum is σ = 13251600. Its totient is φ = 2159168.

The previous prime is 6551639. The next prime is 6551653. The reversal of 6551646 is 6461556.

It is an interprime number because it is at equal distance from previous prime (6551639) and next prime (6551653).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5601 + ... + 6668.

It is an arithmetic number, because the mean of its divisors is an integer number (828225).

Almost surely, 2^6551646 is an apocalyptic number.

6551646 is an abundant number, since it is smaller than the sum of its proper divisors (6699954).

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

6551646 is a wasteful number, since it uses less digits than its factorization.

6551646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12363.

The product of its digits is 21600, while the sum is 33.

The square root of 6551646 is about 2559.6183309236. The cubic root of 6551646 is about 187.1185346643.

The spelling of 6551646 in words is "six million, five hundred fifty-one thousand, six hundred forty-six".