85897850 has 12 divisors (see below), whose sum is σ = 159770094. Its totient is φ = 34359120.

The previous prime is 85897849. The next prime is 85897871. The reversal of 85897850 is 5879858.

It can be written as a sum of positive squares in 3 ways, for example, as 81558961 + 4338889 = 9031^2 + 2083^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 1717957 = 85897850 / (8 + 5 + 8 + 9 + 7 + 8 + 5 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858929 + ... + 859028.

Almost surely, 2^85897850 is an apocalyptic number.

85897850 is a deficient number, since it is larger than the sum of its proper divisors (73872244).

85897850 is a wasteful number, since it uses less digits than its factorization.

85897850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717969 (or 1717964 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 50.

The square root of 85897850 is about 9268.1093001755. The cubic root of 85897850 is about 441.2256632031.

The spelling of 85897850 in words is "eighty-five million, eight hundred ninety-seven thousand, eight hundred fifty".