2656548720 has 480 divisors, whose sum is σ = 10770739200. Its totient is φ = 585930240.

The previous prime is 2656548703. The next prime is 2656548731. The reversal of 2656548720 is 278456562.

2656548720 is a `hidden beast` number, since 2 + 6 + 565 + 4 + 87 + 2 + 0 = 666.

It is a super-2 number, since 2×2656548720² = 14114502203467276800, which contains 22 as substring.

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

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 95 ways as a sum of consecutive naturals, for example, 7655587 + ... + 7655933.

It is an arithmetic number, because the mean of its divisors is an integer number (22439040).

Almost surely, 2^2656548720 is an apocalyptic number.

2656548720 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 2656548720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5385369600).

2656548720 is an abundant number, since it is smaller than the sum of its proper divisors (8114190480).

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

2656548720 is a wasteful number, since it uses less digits than its factorization.

2656548720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 2656548720 is about 51541.7182484247. The cubic root of 2656548720 is about 1384.9664777474.

The spelling of 2656548720 in words is "two billion, six hundred fifty-six million, five hundred forty-eight thousand, seven hundred twenty".