81014767 has 2 divisors, whose sum is σ = 81014768. Its totient is φ = 81014766.

The previous prime is 81014663. The next prime is 81014797. The reversal of 81014767 is 76741018.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81014767 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_4725277 and since 81014767 and 4725277 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81014797) 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, 40507383 + 40507384.

It is an arithmetic number, because the mean of its divisors is an integer number (40507384).

Almost surely, 2^81014767 is an apocalyptic number.

81014767 is a deficient number, since it is larger than the sum of its proper divisors (1).

81014767 is an equidigital number, since it uses as much as digits as its factorization.

81014767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 81014767 is about 9000.8203515013. The cubic root of 81014767 is about 432.7011629506.

The spelling of 81014767 in words is "eighty-one million, fourteen thousand, seven hundred sixty-seven".