85198765 has 8 divisors (see below), whose sum is σ = 102412800. Its totient is φ = 68042832.

The previous prime is 85198759. The next prime is 85198783. The reversal of 85198765 is 56789158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85198765 is a prime.

It is a congruent number.

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, 11229 + ... + 17218.

It is an arithmetic number, because the mean of its divisors is an integer number (12801600).

Almost surely, 2^85198765 is an apocalyptic number.

It is an amenable number.

85198765 is a deficient number, since it is larger than the sum of its proper divisors (17214035).

85198765 is a wasteful number, since it uses less digits than its factorization.

85198765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29051.

The product of its digits is 604800, while the sum is 49.

The square root of 85198765 is about 9230.3177085082. The cubic root of 85198765 is about 440.0254203633.

The spelling of 85198765 in words is "eighty-five million, one hundred ninety-eight thousand, seven hundred sixty-five".