85839660 has 36 divisors (see below), whose sum is σ = 260380848. Its totient is φ = 22890528.

The previous prime is 85839643. The next prime is 85839671. The reversal of 85839660 is 6693858.

85839660 is a `hidden beast` number, since 8 + 583 + 9 + 6 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238264 + ... + 238623.

Almost surely, 2^85839660 is an apocalyptic number.

It is an amenable number.

85839660 is an abundant number, since it is smaller than the sum of its proper divisors (174541188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85839660 is a wasteful number, since it uses less digits than its factorization.

85839660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476902 (or 476897 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 85839660 is about 9264.9695088543. The cubic root of 85839660 is about 441.1260071535.

The spelling of 85839660 in words is "eighty-five million, eight hundred thirty-nine thousand, six hundred sixty".