85198405 has 8 divisors (see below), whose sum is σ = 102890232. Its totient is φ = 67723968.

The previous prime is 85198343. The next prime is 85198411. The reversal of 85198405 is 50489158.

It can be written as a sum of positive squares in 4 ways, for example, as 1127844 + 84070561 = 1062^2 + 9169^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85198405 - 2¹¹ = 85196357 is a prime.

It is a Duffinian number.

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, 53482 + ... + 55051.

It is an arithmetic number, because the mean of its divisors is an integer number (12861279).

Almost surely, 2^85198405 is an apocalyptic number.

It is an amenable number.

85198405 is a deficient number, since it is larger than the sum of its proper divisors (17691827).

85198405 is a wasteful number, since it uses less digits than its factorization.

85198405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108695.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 85198405 is about 9230.2982075337. The cubic root of 85198405 is about 440.0248005993.

The spelling of 85198405 in words is "eighty-five million, one hundred ninety-eight thousand, four hundred five".