85712530 has 8 divisors (see below), whose sum is σ = 154282572. Its totient is φ = 34285008.

The previous prime is 85712527. The next prime is 85712563. The reversal of 85712530 is 3521758.

It can be written as a sum of positive squares in 2 ways, for example, as 84107241 + 1605289 = 9171^2 + 1267^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 85712492 and 85712501.

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, 4285617 + ... + 4285636.

Almost surely, 2^85712530 is an apocalyptic number.

85712530 is a deficient number, since it is larger than the sum of its proper divisors (68570042).

85712530 is a wasteful number, since it uses less digits than its factorization.

85712530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571260.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 85712530 is about 9258.1061778314. The cubic root of 85712530 is about 440.9081278445.

The spelling of 85712530 in words is "eighty-five million, seven hundred twelve thousand, five hundred thirty".