85598866 has 4 divisors (see below), whose sum is σ = 128398302. Its totient is φ = 42799432.

The previous prime is 85598837. The next prime is 85598951. The reversal of 85598866 is 66889558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66889558 = 2 ⋅33444779.

It can be written as a sum of positive squares in only one way, i.e., 71318025 + 14280841 = 8445^2 + 3779^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21399715 + ... + 21399718.

Almost surely, 2^85598866 is an apocalyptic number.

85598866 is a deficient number, since it is larger than the sum of its proper divisors (42799436).

85598866 is a wasteful number, since it uses less digits than its factorization.

85598866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42799435.

The product of its digits is 4147200, while the sum is 55.

The square root of 85598866 is about 9251.9655209042. The cubic root of 85598866 is about 440.7131444873.

The spelling of 85598866 in words is "eighty-five million, five hundred ninety-eight thousand, eight hundred sixty-six".