3261648687 has 32 divisors (see below), whose sum is σ = 4926652416. Its totient is φ = 1902067200.

The previous prime is 3261648683. The next prime is 3261648697. The reversal of 3261648687 is 7868461623.

It is not a de Polignac number, because 3261648687 - 2² = 3261648683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261648683) 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, 82258 + ... + 115280.

It is an arithmetic number, because the mean of its divisors is an integer number (153957888).

Almost surely, 2^3261648687 is an apocalyptic number.

3261648687 is a deficient number, since it is larger than the sum of its proper divisors (1665003729).

3261648687 is a wasteful number, since it uses less digits than its factorization.

3261648687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33151.

The product of its digits is 2322432, while the sum is 51.

The square root of 3261648687 is about 57110.8456162225. The cubic root of 3261648687 is about 1483.0156260976.

The spelling of 3261648687 in words is "three billion, two hundred sixty-one million, six hundred forty-eight thousand, six hundred eighty-seven".