669131511 has 16 divisors (see below), whose sum is σ = 902890464. Its totient is φ = 440745984.

The previous prime is 669131483. The next prime is 669131549. The reversal of 669131511 is 115131966.

It is not a de Polignac number, because 669131511 - 2¹⁰ = 669130487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669131011) 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 15 ways as a sum of consecutive naturals, for example, 211735 + ... + 214871.

It is an arithmetic number, because the mean of its divisors is an integer number (56430654).

Almost surely, 2^669131511 is an apocalyptic number.

669131511 is a deficient number, since it is larger than the sum of its proper divisors (233758953).

669131511 is a wasteful number, since it uses less digits than its factorization.

669131511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970.

The product of its digits is 4860, while the sum is 33.

The square root of 669131511 is about 25867.5764423341. The cubic root of 669131511 is about 874.6557605338.

The spelling of 669131511 in words is "six hundred sixty-nine million, one hundred thirty-one thousand, five hundred eleven".