85398658 has 16 divisors (see below), whose sum is σ = 132045120. Its totient is φ = 41403600.

The previous prime is 85398653. The next prime is 85398697. The reversal of 85398658 is 85689358.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85398653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733 + ... + 13591.

It is an arithmetic number, because the mean of its divisors is an integer number (8252820).

Almost surely, 2^85398658 is an apocalyptic number.

85398658 is a deficient number, since it is larger than the sum of its proper divisors (46646462).

85398658 is a wasteful number, since it uses less digits than its factorization.

85398658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9993.

The product of its digits is 2073600, while the sum is 52.

The square root of 85398658 is about 9241.1394319099. The cubic root of 85398658 is about 440.3692802067.

The spelling of 85398658 in words is "eighty-five million, three hundred ninety-eight thousand, six hundred fifty-eight".