865980360 has 384 divisors, whose sum is σ = 3421716480. Its totient is φ = 185670144.

The previous prime is 865980277. The next prime is 865980373. The reversal of 865980360 is 63089568.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3883209 + ... + 3883431.

It is an arithmetic number, because the mean of its divisors is an integer number (8910720).

Almost surely, 2^865980360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865980360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710858240).

865980360 is an abundant number, since it is smaller than the sum of its proper divisors (2555736120).

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

865980360 is a wasteful number, since it uses less digits than its factorization.

865980360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 865980360 is about 29427.5442400483. The cubic root of 865980360 is about 953.1677670105.

The spelling of 865980360 in words is "eight hundred sixty-five million, nine hundred eighty thousand, three hundred sixty".