80865360 has 120 divisors (see below), whose sum is σ = 280410624. Its totient is φ = 20862720.

The previous prime is 80865331. The next prime is 80865361. The reversal of 80865360 is 6356808.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80865361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20509 + ... + 24131.

Almost surely, 2^80865360 is an apocalyptic number.

80865360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80865360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140205312).

80865360 is an abundant number, since it is smaller than the sum of its proper divisors (199545264).

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

80865360 is a wasteful number, since it uses less digits than its factorization.

80865360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 80865360 is about 8992.5168890584. The cubic root of 80865360 is about 432.4350042105.

It can be divided in two parts, 80865 and 360, that added together give a square (81225 = 285²).

The spelling of 80865360 in words is "eighty million, eight hundred sixty-five thousand, three hundred sixty".