85770605 has 4 divisors (see below), whose sum is σ = 102924732. Its totient is φ = 68616480.

The previous prime is 85770577. The next prime is 85770649. The reversal of 85770605 is 50607758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43533604 + 42237001 = 6598^2 + 6499^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85770605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8577056 + ... + 8577065.

It is an arithmetic number, because the mean of its divisors is an integer number (25731183).

Almost surely, 2^85770605 is an apocalyptic number.

It is an amenable number.

85770605 is a deficient number, since it is larger than the sum of its proper divisors (17154127).

85770605 is a wasteful number, since it uses less digits than its factorization.

85770605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154126.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 85770605 is about 9261.2420873228. The cubic root of 85770605 is about 441.0076852784.

The spelling of 85770605 in words is "eighty-five million, seven hundred seventy thousand, six hundred five".