80563988 has 6 divisors (see below), whose sum is σ = 140986986. Its totient is φ = 40281992.

The previous prime is 80563979. The next prime is 80563997. The reversal of 80563988 is 88936508.

It is an interprime number because it is at equal distance from previous prime (80563979) and next prime (80563997).

It can be written as a sum of positive squares in only one way, i.e., 45185284 + 35378704 = 6722^2 + 5948^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10070495 + ... + 10070502.

It is an arithmetic number, because the mean of its divisors is an integer number (23497831).

Almost surely, 2^80563988 is an apocalyptic number.

It is an amenable number.

80563988 is a deficient number, since it is larger than the sum of its proper divisors (60422998).

80563988 is a wasteful number, since it uses less digits than its factorization.

80563988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20141001 (or 20140999 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 80563988 is about 8975.7444259515. The cubic root of 80563988 is about 431.8971305703.

The spelling of 80563988 in words is "eighty million, five hundred sixty-three thousand, nine hundred eighty-eight".