85782650 has 48 divisors (see below), whose sum is σ = 166027320. Its totient is φ = 32947200.

The previous prime is 85782589. The next prime is 85782659. The reversal of 85782650 is 5628758.

It can be written as a sum of positive squares in 12 ways, for example, as 3463321 + 82319329 = 1861^2 + 9073^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85782598 and 85782607.

It is not an unprimeable number, because it can be changed into a prime (85782659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164390 + ... + 164910.

Almost surely, 2^85782650 is an apocalyptic number.

85782650 is a deficient number, since it is larger than the sum of its proper divisors (80244670).

85782650 is a wasteful number, since it uses less digits than its factorization.

85782650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 85782650 is about 9261.8923552371. The cubic root of 85782650 is about 441.0283282828.

The spelling of 85782650 in words is "eighty-five million, seven hundred eighty-two thousand, six hundred fifty".