85397818 has 16 divisors (see below), whose sum is σ = 147097440. Its totient is φ = 36774000.

The previous prime is 85397789. The next prime is 85397821. The reversal of 85397818 is 81879358.

It is a super-2 number, since 2×85397818² = 14585574638322248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101733 + ... + 102568.

It is an arithmetic number, because the mean of its divisors is an integer number (9193590).

Almost surely, 2^85397818 is an apocalyptic number.

85397818 is a deficient number, since it is larger than the sum of its proper divisors (61699622).

85397818 is a wasteful number, since it uses less digits than its factorization.

85397818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204333.

The product of its digits is 483840, while the sum is 49.

The square root of 85397818 is about 9241.0939828572. The cubic root of 85397818 is about 440.3678363456.

The spelling of 85397818 in words is "eighty-five million, three hundred ninety-seven thousand, eight hundred eighteen".