3261545688 has 32 divisors (see below), whose sum is σ = 8156133360. Its totient is φ = 1086879360.

The previous prime is 3261545663. The next prime is 3261545689. The reversal of 3261545688 is 8865451623.

It is a happy number.

3261545688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3261545688² = 21275360549822786688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261545689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79606 + ... + 113402.

Almost surely, 2^3261545688 is an apocalyptic number.

It is an amenable number.

3261545688 is an abundant number, since it is smaller than the sum of its proper divisors (4894587672).

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

3261545688 is a wasteful number, since it uses less digits than its factorization.

3261545688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37827 (or 37823 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 3261545688 is about 57109.9438626935. The cubic root of 3261545688 is about 1483.0000153080. Note that the first 4 decimals are identical.

The spelling of 3261545688 in words is "three billion, two hundred sixty-one million, five hundred forty-five thousand, six hundred eighty-eight".