2646764274 has 64 divisors (see below), whose sum is σ = 6621576192. Its totient is φ = 685195200.

The previous prime is 2646764243. The next prime is 2646764279. The reversal of 2646764274 is 4724676462.

It is a happy number.

It is a super-2 number, since 2×2646764274² = 14010722244245494152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2646764279) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 132504 + ... + 151164.

It is an arithmetic number, because the mean of its divisors is an integer number (103462128).

Almost surely, 2^2646764274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646764274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3310788096).

2646764274 is an abundant number, since it is smaller than the sum of its proper divisors (3974811918).

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

2646764274 is a wasteful number, since it uses less digits than its factorization.

2646764274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18991.

The product of its digits is 2709504, while the sum is 48.

The square root of 2646764274 is about 51446.7129562230. The cubic root of 2646764274 is about 1383.2640432254.

The spelling of 2646764274 in words is "two billion, six hundred forty-six million, seven hundred sixty-four thousand, two hundred seventy-four".