85197958 has 8 divisors (see below), whose sum is σ = 127898928. Its totient is φ = 42564984.

The previous prime is 85197953. The next prime is 85197961. The reversal of 85197958 is 85979158.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85197953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13741 + ... + 18952.

It is an arithmetic number, because the mean of its divisors is an integer number (15987366).

Almost surely, 2^85197958 is an apocalyptic number.

85197958 is a deficient number, since it is larger than the sum of its proper divisors (42700970).

85197958 is a wasteful number, since it uses less digits than its factorization.

85197958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33998.

The product of its digits is 907200, while the sum is 52.

The square root of 85197958 is about 9230.2739937664. The cubic root of 85197958 is about 440.0240310566.

The spelling of 85197958 in words is "eighty-five million, one hundred ninety-seven thousand, nine hundred fifty-eight".