80787 has 8 divisors (see below), whose sum is σ = 123136. Its totient is φ = 46152.

The previous prime is 80783. The next prime is 80789. The reversal of 80787 is 78708.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80787 - 2² = 80783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80783) 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, 1903 + ... + 1944.

It is an arithmetic number, because the mean of its divisors is an integer number (15392).

2⁸⁰⁷⁸⁷ is an apocalyptic number.

80787 is a deficient number, since it is larger than the sum of its proper divisors (42349).

80787 is a wasteful number, since it uses less digits than its factorization.

80787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 80787 is about 284.2305402310. The cubic root of 80787 is about 43.2295279949.

The spelling of 80787 in words is "eighty thousand, seven hundred eighty-seven".