2656646550 has 72 divisors (see below), whose sum is σ = 7145818680. Its totient is φ = 707616000.

The previous prime is 2656646527. The next prime is 2656646569. The reversal of 2656646550 is 556466562.

It is a happy number.

2656646550 is a `hidden beast` number, since 2 + 6 + 56 + 6 + 46 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2656646496 and 2656646505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 451125 + ... + 456975.

Almost surely, 2^2656646550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656646550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3572909340).

2656646550 is an abundant number, since it is smaller than the sum of its proper divisors (4489172130).

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

2656646550 is a wasteful number, since it uses less digits than its factorization.

2656646550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878 (or 6870 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The square root of 2656646550 is about 51542.6672767330. The cubic root of 2656646550 is about 1384.9834784529.

The spelling of 2656646550 in words is "two billion, six hundred fifty-six million, six hundred forty-six thousand, five hundred fifty".