85581560 has 16 divisors (see below), whose sum is σ = 192558600. Its totient is φ = 34232608.

The previous prime is 85581557. The next prime is 85581563. The reversal of 85581560 is 6518558.

It is an interprime number because it is at equal distance from previous prime (85581557) and next prime (85581563).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85581563) 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, 1069730 + ... + 1069809.

Almost surely, 2^85581560 is an apocalyptic number.

It is an amenable number.

85581560 is an abundant number, since it is smaller than the sum of its proper divisors (106977040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85581560 is a wasteful number, since it uses less digits than its factorization.

85581560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139550 (or 2139546 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 85581560 is about 9251.0302129006. The cubic root of 85581560 is about 440.6834420076.

The spelling of 85581560 in words is "eighty-five million, five hundred eighty-one thousand, five hundred sixty".