3261322764 has 240 divisors, whose sum is σ = 10011133440. Its totient is φ = 906681600.

The previous prime is 3261322759. The next prime is 3261322777. The reversal of 3261322764 is 4672231623.

3261322764 is a `hidden beast` number, since 3 + 261 + 322 + 76 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21598089 + ... + 21598239.

It is an arithmetic number, because the mean of its divisors is an integer number (41713056).

Almost surely, 2^3261322764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3261322764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5005566720).

3261322764 is an abundant number, since it is smaller than the sum of its proper divisors (6749810676).

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

3261322764 is a wasteful number, since it uses less digits than its factorization.

3261322764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 359 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 3261322764 is about 57107.9921201928. The cubic root of 3261322764 is about 1482.9662272558.

The spelling of 3261322764 in words is "three billion, two hundred sixty-one million, three hundred twenty-two thousand, seven hundred sixty-four".