2656547740 has 216 divisors, whose sum is σ = 7313057136. Its totient is φ = 807206400.

The previous prime is 2656547737. The next prime is 2656547767. The reversal of 2656547740 is 477456562.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5098680 + ... + 5099200.

It is an arithmetic number, because the mean of its divisors is an integer number (33856746).

Almost surely, 2^2656547740 is an apocalyptic number.

2656547740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656547740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3656528568).

2656547740 is an abundant number, since it is smaller than the sum of its proper divisors (4656509396).

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

2656547740 is a wasteful number, since it uses less digits than its factorization.

2656547740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The square root of 2656547740 is about 51541.7087415619. The cubic root of 2656547740 is about 1384.9663074428.

It can be divided in two parts, 26565 and 47740, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 2656547740 in words is "two billion, six hundred fifty-six million, five hundred forty-seven thousand, seven hundred forty".