85691798 has 8 divisors (see below), whose sum is σ = 136098792. Its totient is φ = 40325536.

The previous prime is 85691797. The next prime is 85691803. The reversal of 85691798 is 89719658.

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 (85691791) 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, 1260140 + ... + 1260207.

It is an arithmetic number, because the mean of its divisors is an integer number (17012349).

Almost surely, 2^85691798 is an apocalyptic number.

85691798 is a deficient number, since it is larger than the sum of its proper divisors (50406994).

85691798 is a wasteful number, since it uses less digits than its factorization.

85691798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520366.

The product of its digits is 1088640, while the sum is 53.

The square root of 85691798 is about 9256.9864426821. The cubic root of 85691798 is about 440.8725762770.

The spelling of 85691798 in words is "eighty-five million, six hundred ninety-one thousand, seven hundred ninety-eight".