867585980 has 36 divisors (see below), whose sum is σ = 1919091720. Its totient is φ = 328551840.

The previous prime is 867585977. The next prime is 867585989. The reversal of 867585980 is 89585768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867585989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 573425 + ... + 574935.

Almost surely, 2^867585980 is an apocalyptic number.

It is an amenable number.

867585980 is an abundant number, since it is smaller than the sum of its proper divisors (1051505740).

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

867585980 is a wasteful number, since it uses less digits than its factorization.

867585980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 56.

The square root of 867585980 is about 29454.8125100127. The cubic root of 867585980 is about 953.7564948911.

The spelling of 867585980 in words is "eight hundred sixty-seven million, five hundred eighty-five thousand, nine hundred eighty".