85856690 has 8 divisors (see below), whose sum is σ = 154542060. Its totient is φ = 34342672.

The previous prime is 85856689. The next prime is 85856717. The reversal of 85856690 is 9665858.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70040161 + 15816529 = 8369^2 + 3977^2 .

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

It is a super-2 number, since 2×85856690² = 14742742435512200, which contains 22 as substring.

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, 4292825 + ... + 4292844.

Almost surely, 2^85856690 is an apocalyptic number.

85856690 is a deficient number, since it is larger than the sum of its proper divisors (68685370).

85856690 is a wasteful number, since it uses less digits than its factorization.

85856690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8585676.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 85856690 is about 9265.8885164889. Note that the first 3 decimals coincide. The cubic root of 85856690 is about 441.1551773496.

The spelling of 85856690 in words is "eighty-five million, eight hundred fifty-six thousand, six hundred ninety".