865772082 has 36 divisors (see below), whose sum is σ = 2182101246. Its totient is φ = 247363200.

The previous prime is 865772029. The next prime is 865772129. The reversal of 865772082 is 280277568.

It can be written as a sum of positive squares in only one way, i.e., 584237241 + 281534841 = 24171^2 + 16779^2 .

It is a super-2 number, since 2×865772082² = 1499122595941229448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 489919 + ... + 491682.

Almost surely, 2^865772082 is an apocalyptic number.

865772082 is an abundant number, since it is smaller than the sum of its proper divisors (1316329164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865772082 is a wasteful number, since it uses less digits than its factorization.

865772082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981623 (or 981613 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 865772082 is about 29424.0051998364. The cubic root of 865772082 is about 953.0913450333.

The spelling of 865772082 in words is "eight hundred sixty-five million, seven hundred seventy-two thousand, eighty-two".