863685080 has 64 divisors (see below), whose sum is σ = 2001192480. Its totient is φ = 335232000.

The previous prime is 863685077. The next prime is 863685083. The reversal of 863685080 is 80586368.

It is an interprime number because it is at equal distance from previous prime (863685077) and next prime (863685083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863685083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888995 + ... + 889965.

Almost surely, 2^863685080 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 863685080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000596240).

863685080 is an abundant number, since it is smaller than the sum of its proper divisors (1137507400).

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

863685080 is a wasteful number, since it uses less digits than its factorization.

863685080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 863685080 is about 29388.5195271895. The cubic root of 863685080 is about 952.3248985216.

The spelling of 863685080 in words is "eight hundred sixty-three million, six hundred eighty-five thousand, eighty".