8661375 has 24 divisors (see below), whose sum is σ = 15615600. Its totient is φ = 4618800.

The previous prime is 8661353. The next prime is 8661383. The reversal of 8661375 is 5731668.

8661375 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8661375 - 2⁶ = 8661311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2725 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (650650).

Almost surely, 2^8661375 is an apocalyptic number.

8661375 is a deficient number, since it is larger than the sum of its proper divisors (6954225).

8661375 is a wasteful number, since it uses less digits than its factorization.

8661375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720 (or 7707 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 8661375 is about 2943.0214066500. The cubic root of 8661375 is about 205.3661906177.

The spelling of 8661375 in words is "eight million, six hundred sixty-one thousand, three hundred seventy-five".