85651970 has 16 divisors (see below), whose sum is σ = 155764728. Its totient is φ = 33907200.

The previous prime is 85651963. The next prime is 85652027. The reversal of 85651970 is 7915658.

It can be written as a sum of positive squares in 4 ways, for example, as 66406201 + 19245769 = 8149^2 + 4387^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43181 + ... + 45120.

Almost surely, 2^85651970 is an apocalyptic number.

85651970 is a deficient number, since it is larger than the sum of its proper divisors (70112758).

85651970 is a wasteful number, since it uses less digits than its factorization.

85651970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88405.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 85651970 is about 9254.8349526072. The cubic root of 85651970 is about 440.8042624887.

The spelling of 85651970 in words is "eighty-five million, six hundred fifty-one thousand, nine hundred seventy".