85618570 has 8 divisors (see below), whose sum is σ = 154113444. Its totient is φ = 34247424.

The previous prime is 85618523. The next prime is 85618571. The reversal of 85618570 is 7581658.

It can be written as a sum of positive squares in 2 ways, for example, as 71757841 + 13860729 = 8471^2 + 3723^2 .

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

It is not an unprimeable number, because it can be changed into a prime (85618571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4280919 + ... + 4280938.

Almost surely, 2^85618570 is an apocalyptic number.

85618570 is a deficient number, since it is larger than the sum of its proper divisors (68494874).

85618570 is a wasteful number, since it uses less digits than its factorization.

85618570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8561864.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 85618570 is about 9253.0303144429. The cubic root of 85618570 is about 440.7469578074.

It can be divided in two parts, 85618 and 570, that multiplied together give a triangular number (48802260 = T₉₈₇₉).

The spelling of 85618570 in words is "eighty-five million, six hundred eighteen thousand, five hundred seventy".