80774887 has 4 divisors (see below), whose sum is σ = 81682560. Its totient is φ = 79867216.

The previous prime is 80774867. The next prime is 80774891. The reversal of 80774887 is 78847708.

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-80774887 is a prime.

It is a Smith number, since the sum of its digits (49) 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 a self number, because there is not a number n which added to its sum of digits gives 80774887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80774867) 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 3 ways as a sum of consecutive naturals, for example, 453703 + ... + 453880.

It is an arithmetic number, because the mean of its divisors is an integer number (20420640).

Almost surely, 2^80774887 is an apocalyptic number.

80774887 is a deficient number, since it is larger than the sum of its proper divisors (907673).

80774887 is an equidigital number, since it uses as much as digits as its factorization.

80774887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907672.

The product of its (nonzero) digits is 702464, while the sum is 49.

The square root of 80774887 is about 8987.4850208498. The cubic root of 80774887 is about 432.2736731128.

The spelling of 80774887 in words is "eighty million, seven hundred seventy-four thousand, eight hundred eighty-seven".