11661875 has 20 divisors (see below), whose sum is σ = 14920224. Its totient is φ = 9108000.

The previous prime is 11661863. The next prime is 11661893. The reversal of 11661875 is 57816611.

It is not a de Polignac number, because 11661875 - 2⁸ = 11661619 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29177 + ... + 29573.

Almost surely, 2^11661875 is an apocalyptic number.

11661875 is a deficient number, since it is larger than the sum of its proper divisors (3258349).

11661875 is an frugal number, since it uses more digits than its factorization.

11661875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 449 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 11661875 is about 3414.9487551060. The cubic root of 11661875 is about 226.7720158595.

The spelling of 11661875 in words is "eleven million, six hundred sixty-one thousand, eight hundred seventy-five".