80553640 has 32 divisors (see below), whose sum is σ = 184670280. Its totient is φ = 31612672.

The previous prime is 80553623. The next prime is 80553647. The reversal of 80553640 is 4635508.

It can be written as a sum of positive squares in 4 ways, for example, as 80317444 + 236196 = 8962^2 + 486^2 .

It is not an unprimeable number, because it can be changed into a prime (80553647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16879 + ... + 21118.

Almost surely, 2^80553640 is an apocalyptic number.

It is an amenable number.

80553640 is an abundant number, since it is smaller than the sum of its proper divisors (104116640).

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

80553640 is a wasteful number, since it uses less digits than its factorization.

80553640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38061 (or 38057 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 80553640 is about 8975.1679650021. The cubic root of 80553640 is about 431.8786381769.

It can be divided in two parts, 805 and 53640, that added together give a palindrome (54445).

The spelling of 80553640 in words is "eighty million, five hundred fifty-three thousand, six hundred forty".