865780068 has 24 divisors (see below), whose sum is σ = 2126477920. Its totient is φ = 273404160.

The previous prime is 865780037. The next prime is 865780079. The reversal of 865780068 is 860087568.

It is a happy number.

It is a super-2 number, since 2×865780068² = 1499150252292169248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 865779999 and 865780026.

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, 1898413 + ... + 1898868.

Almost surely, 2^865780068 is an apocalyptic number.

It is an amenable number.

865780068 is an abundant number, since it is smaller than the sum of its proper divisors (1260697852).

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

865780068 is a wasteful number, since it uses less digits than its factorization.

865780068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797307 (or 3797305 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 865780068 is about 29424.1409050460. The cubic root of 865780068 is about 953.0942755059.

The spelling of 865780068 in words is "eight hundred sixty-five million, seven hundred eighty thousand, sixty-eight".