85420975 has 12 divisors (see below), whose sum is σ = 108785944. Its totient is φ = 66489120.

The previous prime is 85420961. The next prime is 85420981. The reversal of 85420975 is 57902458.

It is not a de Polignac number, because 85420975 - 2⁵ = 85420943 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 45249 + ... + 47098.

Almost surely, 2^85420975 is an apocalyptic number.

85420975 is a deficient number, since it is larger than the sum of its proper divisors (23364969).

85420975 is a wasteful number, since it uses less digits than its factorization.

85420975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92394 (or 92389 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 85420975 is about 9242.3468340027. The cubic root of 85420975 is about 440.4076370361.

The spelling of 85420975 in words is "eighty-five million, four hundred twenty thousand, nine hundred seventy-five".