85117478 has 8 divisors (see below), whose sum is σ = 128038968. Its totient is φ = 42437824.

The previous prime is 85117477. The next prime is 85117507. The reversal of 85117478 is 87471158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85117478² = 14489970122160968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85117477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59576 + ... + 60987.

It is an arithmetic number, because the mean of its divisors is an integer number (16004871).

Almost surely, 2^85117478 is an apocalyptic number.

85117478 is a deficient number, since it is larger than the sum of its proper divisors (42921490).

85117478 is a wasteful number, since it uses less digits than its factorization.

85117478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120918.

The product of its digits is 62720, while the sum is 41.

The square root of 85117478 is about 9225.9133965153. The cubic root of 85117478 is about 439.8854350488.

The spelling of 85117478 in words is "eighty-five million, one hundred seventeen thousand, four hundred seventy-eight".