2656423770 has 192 divisors, whose sum is σ = 8713547136. Its totient is φ = 509483520.

The previous prime is 2656423753. The next prime is 2656423799. The reversal of 2656423770 is 773246562.

It is a super-3 number, since 3×2656423770³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 203892 + ... + 216528.

It is an arithmetic number, because the mean of its divisors is an integer number (45383058).

Almost surely, 2^2656423770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656423770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4356773568).

2656423770 is an abundant number, since it is smaller than the sum of its proper divisors (6057123366).

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

2656423770 is a wasteful number, since it uses less digits than its factorization.

2656423770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685 (or 12678 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 2656423770 is about 51540.5061092729. The cubic root of 2656423770 is about 1384.9447635745.

It can be divided in two parts, 2656 and 423770, that added together give a triangular number (426426 = T₉₂₃).

The spelling of 2656423770 in words is "two billion, six hundred fifty-six million, four hundred twenty-three thousand, seven hundred seventy".