80640360 has 80 divisors (see below), whose sum is σ = 271052100. Its totient is φ = 21503232.

The previous prime is 80640341. The next prime is 80640383. The reversal of 80640360 is 6304608.

It can be written as a sum of positive squares in 2 ways, for example, as 66487716 + 14152644 = 8154^2 + 3762^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9205 + ... + 15684.

Almost surely, 2^80640360 is an apocalyptic number.

It is an amenable number.

80640360 is an abundant number, since it is smaller than the sum of its proper divisors (190411740).

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

80640360 is a wasteful number, since it uses less digits than its factorization.

80640360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24912 (or 24899 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 80640360 is about 8979.9977728282. The cubic root of 80640360 is about 432.0335622073.

Adding to 80640360 its reverse (6304608), we get a palindrome (86944968).

The spelling of 80640360 in words is "eighty million, six hundred forty thousand, three hundred sixty".