85771620698 has 16 divisors (see below), whose sum is σ = 131657390280. Its totient is φ = 41892891456.

The previous prime is 85771620647. The next prime is 85771620731. The reversal of 85771620698 is 89602617758.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82646475289 + 3125145409 = 287483^2 + 55903^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742465 + ... + 1791012.

Almost surely, 2^85771620698 is an apocalyptic number.

85771620698 is a deficient number, since it is larger than the sum of its proper divisors (45885769582).

85771620698 is a wasteful number, since it uses less digits than its factorization.

85771620698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533761.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 85771620698 in words is "eighty-five billion, seven hundred seventy-one million, six hundred twenty thousand, six hundred ninety-eight".