85085730 has 24 divisors (see below), whose sum is σ = 221223132. Its totient is φ = 22689504.

The previous prime is 85085719. The next prime is 85085753. The reversal of 85085730 is 3758058.

It is a happy number.

85085730 is a `hidden beast` number, since 85 + 0 + 8 + 573 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68707521 + 16378209 = 8289^2 + 4047^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472609 + ... + 472788.

Almost surely, 2^85085730 is an apocalyptic number.

85085730 is an abundant number, since it is smaller than the sum of its proper divisors (136137402).

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

85085730 is a wasteful number, since it uses less digits than its factorization.

85085730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945410 (or 945407 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 85085730 is about 9224.1926475979. The cubic root of 85085730 is about 439.8307372366.

The spelling of 85085730 in words is "eighty-five million, eighty-five thousand, seven hundred thirty".