2656614780 has 48 divisors (see below), whose sum is σ = 8265025440. Its totient is φ = 708430464.

The previous prime is 2656614767. The next prime is 2656614787. The reversal of 2656614780 is 874166562.

2656614780 is a `hidden beast` number, since 2 + 6 + 566 + 1 + 4 + 7 + 80 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656614787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2459289 + ... + 2460368.

It is an arithmetic number, because the mean of its divisors is an integer number (172188030).

Almost surely, 2^2656614780 is an apocalyptic number.

2656614780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2656614780 is an abundant number, since it is smaller than the sum of its proper divisors (5608410660).

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

2656614780 is a wasteful number, since it uses less digits than its factorization.

2656614780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919675 (or 4919667 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2656614780 is about 51542.3590845433. The cubic root of 2656614780 is about 1384.9779575704.

The spelling of 2656614780 in words is "two billion, six hundred fifty-six million, six hundred fourteen thousand, seven hundred eighty".