80637863 has 2 divisors, whose sum is σ = 80637864. Its totient is φ = 80637862.

The previous prime is 80637811. The next prime is 80637923. The reversal of 80637863 is 36873608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80637863 - 2¹⁰ = 80636839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80637863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80630863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40318931 + 40318932.

It is an arithmetic number, because the mean of its divisors is an integer number (40318932).

Almost surely, 2^80637863 is an apocalyptic number.

80637863 is a deficient number, since it is larger than the sum of its proper divisors (1).

80637863 is an equidigital number, since it uses as much as digits as its factorization.

80637863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 80637863 is about 8979.8587405371. The cubic root of 80637863 is about 432.0291029062.

It can be divided in two parts, 806 and 37863, that multiplied together give a triangular number (30517578 = T₇₈₁₂).

The spelling of 80637863 in words is "eighty million, six hundred thirty-seven thousand, eight hundred sixty-three".