3660516531 has 72 divisors (see below), whose sum is σ = 6328720944. Its totient is φ = 2031644160.

The previous prime is 3660516521. The next prime is 3660516571. The reversal of 3660516531 is 1356150663.

3660516531 is a `hidden beast` number, since 3 + 6 + 605 + 16 + 5 + 31 = 666.

It is not a de Polignac number, because 3660516531 - 2⁷ = 3660516403 is a prime.

It is a super-2 number, since 2×3660516531² = 26798762547448547922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660516521) 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 71 ways as a sum of consecutive naturals, for example, 8009655 + ... + 8010111.

It is an arithmetic number, because the mean of its divisors is an integer number (87898902).

Almost surely, 2^3660516531 is an apocalyptic number.

3660516531 is a deficient number, since it is larger than the sum of its proper divisors (2668204413).

3660516531 is a wasteful number, since it uses less digits than its factorization.

3660516531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 3660516531 is about 60502.2026954391. The cubic root of 3660516531 is about 1541.1590379320.

The spelling of 3660516531 in words is "three billion, six hundred sixty million, five hundred sixteen thousand, five hundred thirty-one".