3261649880 has 32 divisors (see below), whose sum is σ = 7385469840. Its totient is φ = 1296347520.

The previous prime is 3261649879. The next prime is 3261649907. The reversal of 3261649880 is 889461623.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253406 + ... + 265965.

Almost surely, 2^3261649880 is an apocalyptic number.

It is an amenable number.

3261649880 is an abundant number, since it is smaller than the sum of its proper divisors (4123819960).

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

3261649880 is a wasteful number, since it uses less digits than its factorization.

3261649880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519539 (or 519535 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 3261649880 is about 57110.8560608226. The cubic root of 3261649880 is about 1483.0158069098.

The spelling of 3261649880 in words is "three billion, two hundred sixty-one million, six hundred forty-nine thousand, eight hundred eighty".