85618405 has 8 divisors (see below), whose sum is σ = 103651992. Its totient is φ = 67888128.

The previous prime is 85618399. The next prime is 85618417. The reversal of 85618405 is 50481658.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 85266756 = 593^2 + 9234^2 .

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 85618405 - 2⁷ = 85618277 is a prime.

It is a super-2 number, since 2×85618405² = 14661022549488050, which contains 22 as substring.

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, 75204 + ... + 76333.

It is an arithmetic number, because the mean of its divisors is an integer number (12956499).

Almost surely, 2^85618405 is an apocalyptic number.

It is an amenable number.

85618405 is a deficient number, since it is larger than the sum of its proper divisors (18033587).

85618405 is a wasteful number, since it uses less digits than its factorization.

85618405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151655.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 85618405 is about 9253.0213984406. The cubic root of 85618405 is about 440.7466746785.

The spelling of 85618405 in words is "eighty-five million, six hundred eighteen thousand, four hundred five".