80617987 has 2 divisors, whose sum is σ = 80617988. Its totient is φ = 80617986.

The previous prime is 80617981. The next prime is 80618003. The reversal of 80617987 is 78971608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80617987 - 2¹¹ = 80615939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80617981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40308993 + 40308994.

It is an arithmetic number, because the mean of its divisors is an integer number (40308994).

Almost surely, 2^80617987 is an apocalyptic number.

80617987 is a deficient number, since it is larger than the sum of its proper divisors (1).

80617987 is an equidigital number, since it uses as much as digits as its factorization.

80617987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 80617987 is about 8978.7519734092. The cubic root of 80617987 is about 431.9936038005.

The spelling of 80617987 in words is "eighty million, six hundred seventeen thousand, nine hundred eighty-seven".