80500987 has 4 divisors (see below), whose sum is σ = 92001136. Its totient is φ = 69000840.

The previous prime is 80500963. The next prime is 80500991. The reversal of 80500987 is 78900508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80500987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80500997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5750064 + ... + 5750077.

It is an arithmetic number, because the mean of its divisors is an integer number (23000284).

Almost surely, 2^80500987 is an apocalyptic number.

80500987 is a deficient number, since it is larger than the sum of its proper divisors (11500149).

80500987 is a wasteful number, since it uses less digits than its factorization.

80500987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500148.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 80500987 is about 8972.2342256542. The cubic root of 80500987 is about 431.7845200951.

The spelling of 80500987 in words is "eighty million, five hundred thousand, nine hundred eighty-seven".