86731963 has 2 divisors, whose sum is σ = 86731964. Its totient is φ = 86731962.

The previous prime is 86731949. The next prime is 86732027. The reversal of 86731963 is 36913768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86731963 - 2²¹ = 84634811 is a prime.

It is not a weakly prime, because it can be changed into another prime (86731063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365981 + 43365982.

It is an arithmetic number, because the mean of its divisors is an integer number (43365982).

Almost surely, 2^86731963 is an apocalyptic number.

86731963 is a deficient number, since it is larger than the sum of its proper divisors (1).

86731963 is an equidigital number, since it uses as much as digits as its factorization.

86731963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 86731963 is about 9312.9996778696. Note that the first 3 decimals coincide. The cubic root of 86731963 is about 442.6492424337.

The spelling of 86731963 in words is "eighty-six million, seven hundred thirty-one thousand, nine hundred sixty-three".