6551964 has 72 divisors (see below), whose sum is σ = 17795232. Its totient is φ = 2027520.

The previous prime is 6551959. The next prime is 6551983. The reversal of 6551964 is 4691556.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33852 + ... + 34044.

It is an arithmetic number, because the mean of its divisors is an integer number (247156).

Almost surely, 2^6551964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8897616).

6551964 is an abundant number, since it is smaller than the sum of its proper divisors (11243268).

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

6551964 is a wasteful number, since it uses less digits than its factorization.

6551964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 262 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6551964 is about 2559.6804488061. The cubic root of 6551964 is about 187.1215620323.

The spelling of 6551964 in words is "six million, five hundred fifty-one thousand, nine hundred sixty-four".