80812887 has 8 divisors (see below), whose sum is σ = 107932800. Its totient is φ = 53784120.

The previous prime is 80812859. The next prime is 80812891. The reversal of 80812887 is 78821808.

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 80812887 - 2¹¹ = 80810839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80812807) 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, 20689 + ... + 24282.

It is an arithmetic number, because the mean of its divisors is an integer number (13491600).

Almost surely, 2^80812887 is an apocalyptic number.

80812887 is a deficient number, since it is larger than the sum of its proper divisors (27119913).

80812887 is a wasteful number, since it uses less digits than its factorization.

80812887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45573.

The product of its (nonzero) digits is 57344, while the sum is 42.

The square root of 80812887 is about 8989.5988230844. The cubic root of 80812887 is about 432.3414492289.

It can be divided in two parts, 808 and 12887, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 80812887 in words is "eighty million, eight hundred twelve thousand, eight hundred eighty-seven".