80863987 has 2 divisors, whose sum is σ = 80863988. Its totient is φ = 80863986.

The previous prime is 80863967. The next prime is 80863997. The reversal of 80863987 is 78936808.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80863987 - 2¹¹ = 80861939 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80863987.

It is not a weakly prime, because it can be changed into another prime (80863957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40431993 + 40431994.

It is an arithmetic number, because the mean of its divisors is an integer number (40431994).

Almost surely, 2^80863987 is an apocalyptic number.

80863987 is a deficient number, since it is larger than the sum of its proper divisors (1).

80863987 is an equidigital number, since it uses as much as digits as its factorization.

80863987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 80863987 is about 8992.4405474821. The cubic root of 80863987 is about 432.4325567817.

The spelling of 80863987 in words is "eighty million, eight hundred sixty-three thousand, nine hundred eighty-seven".