85945690 has 16 divisors (see below), whose sum is σ = 155235528. Its totient is φ = 34259776.

The previous prime is 85945669. The next prime is 85945697. The reversal of 85945690 is 9654958.

It can be written as a sum of positive squares in 4 ways, for example, as 85914361 + 31329 = 9269^2 + 177^2 .

It is a super-2 number, since 2×85945690² = 14773323259152200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85945690.

It is not an unprimeable number, because it can be changed into a prime (85945697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11737 + ... + 17596.

Almost surely, 2^85945690 is an apocalyptic number.

85945690 is a deficient number, since it is larger than the sum of its proper divisors (69289838).

85945690 is a wasteful number, since it uses less digits than its factorization.

85945690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29633.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 85945690 is about 9270.6898340954. The cubic root of 85945690 is about 441.3075601627.

The spelling of 85945690 in words is "eighty-five million, nine hundred forty-five thousand, six hundred ninety".