80786900 has 18 divisors (see below), whose sum is σ = 175307790. Its totient is φ = 32314720.

The previous prime is 80786897. The next prime is 80786903. The reversal of 80786900 is 968708.

It is an interprime number because it is at equal distance from previous prime (80786897) and next prime (80786903).

It can be written as a sum of positive squares in 3 ways, for example, as 5895184 + 74891716 = 2428^2 + 8654^2 .

It is a super-2 number, since 2×80786900² = 13053046423220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80786903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403835 + ... + 404034.

Almost surely, 2^80786900 is an apocalyptic number.

It is an amenable number.

80786900 is an abundant number, since it is smaller than the sum of its proper divisors (94520890).

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

80786900 is a wasteful number, since it uses less digits than its factorization.

80786900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807883 (or 807876 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 80786900 is about 8988.1533142242. The cubic root of 80786900 is about 432.2951015807.

The spelling of 80786900 in words is "eighty million, seven hundred eighty-six thousand, nine hundred".