80790187 has 4 divisors (see below), whose sum is σ = 81137160. Its totient is φ = 80443216.

The previous prime is 80790173. The next prime is 80790211. The reversal of 80790187 is 78109708.

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-80790187 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80790107) 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, 173137 + ... + 173602.

It is an arithmetic number, because the mean of its divisors is an integer number (20284290).

Almost surely, 2^80790187 is an apocalyptic number.

80790187 is a deficient number, since it is larger than the sum of its proper divisors (346973).

80790187 is a wasteful number, since it uses less digits than its factorization.

80790187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346972.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 80790187 is about 8988.3361641630. The cubic root of 80790187 is about 432.3009644732.

The spelling of 80790187 in words is "eighty million, seven hundred ninety thousand, one hundred eighty-seven".