85660875 has 64 divisors (see below), whose sum is σ = 167806080. Its totient is φ = 42969600.

The previous prime is 85660871. The next prime is 85660889. The reversal of 85660875 is 57806658.

85660875 is a `hidden beast` number, since 8 + 566 + 0 + 87 + 5 = 666.

It is not a de Polignac number, because 85660875 - 2² = 85660871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 85660875.

It is not an unprimeable number, because it can be changed into a prime (85660871) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 56629 + ... + 58121.

It is an arithmetic number, because the mean of its divisors is an integer number (2621970).

Almost surely, 2^85660875 is an apocalyptic number.

85660875 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85660875 is a deficient number, since it is larger than the sum of its proper divisors (82145205).

85660875 is a wasteful number, since it uses less digits than its factorization.

85660875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 85660875 is about 9255.3160399848. The cubic root of 85660875 is about 440.8195383620.

The spelling of 85660875 in words is "eighty-five million, six hundred sixty thousand, eight hundred seventy-five".