85770505 has 4 divisors (see below), whose sum is σ = 102924612. Its totient is φ = 68616400.

The previous prime is 85770499. The next prime is 85770511. The reversal of 85770505 is 50507758.

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

It is an interprime number because it is at equal distance from previous prime (85770499) and next prime (85770511).

It can be written as a sum of positive squares in 2 ways, for example, as 39476089 + 46294416 = 6283^2 + 6804^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85770505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8577046 + ... + 8577055.

It is an arithmetic number, because the mean of its divisors is an integer number (25731153).

Almost surely, 2^85770505 is an apocalyptic number.

It is an amenable number.

85770505 is a deficient number, since it is larger than the sum of its proper divisors (17154107).

85770505 is a wasteful number, since it uses less digits than its factorization.

85770505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17154106.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 85770505 is about 9261.2366884774. The cubic root of 85770505 is about 441.0075138879.

The spelling of 85770505 in words is "eighty-five million, seven hundred seventy thousand, five hundred five".