85798917 has 12 divisors (see below), whose sum is σ = 127929984. Its totient is φ = 55353960.

The previous prime is 85798883. The next prime is 85798939. The reversal of 85798917 is 71989758.

It is not a de Polignac number, because 85798917 - 2¹¹ = 85796869 is a prime.

It is a super-2 number, since 2×85798917² = 14722908316745778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85798957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153483 + ... + 154040.

It is an arithmetic number, because the mean of its divisors is an integer number (10660832).

Almost surely, 2^85798917 is an apocalyptic number.

It is an amenable number.

85798917 is a deficient number, since it is larger than the sum of its proper divisors (42131067).

85798917 is a wasteful number, since it uses less digits than its factorization.

85798917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307560 (or 307557 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The square root of 85798917 is about 9262.7704818807. The cubic root of 85798917 is about 441.0562039833.

The spelling of 85798917 in words is "eighty-five million, seven hundred ninety-eight thousand, nine hundred seventeen".