3287760921 has 45 divisors (see below), whose sum is σ = 5152769391. Its totient is φ = 2088974448.

The previous prime is 3287760919. The next prime is 3287760929. The reversal of 3287760921 is 1290677823.

The square root of 3287760921 is 57339.

It is a perfect power (a square), and thus also a powerful number.

3287760921 is a `hidden beast` number, since 32 + 8 + 7 + 7 + 609 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 566678025 + 2721082896 = 23805^2 + 52164^2 .

It is not a de Polignac number, because 3287760921 - 2¹ = 3287760919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3287760929) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 11869035 + ... + 11869311.

Almost surely, 2^3287760921 is an apocalyptic number.

3287760921 is the 57339-th square number.

3287760921 is the 28670-th centered octagonal number.

It is an amenable number.

3287760921 is a deficient number, since it is larger than the sum of its proper divisors (1865008470).

3287760921 is an frugal number, since it uses more digits than its factorization.

3287760921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The cubic root of 3287760921 is about 1486.9627062722.

Multiplying 3287760921 by its product of nonzero digits (254016), we get a square (835143878108736 = 28898856²).

The spelling of 3287760921 in words is "three billion, two hundred eighty-seven million, seven hundred sixty thousand, nine hundred twenty-one".