97866787 has 2 divisors, whose sum is σ = 97866788. Its totient is φ = 97866786.

The previous prime is 97866767. The next prime is 97866799. The reversal of 97866787 is 78766879.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97866787 is a prime.

It is not a weakly prime, because it can be changed into another prime (97866767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48933393 + 48933394.

It is an arithmetic number, because the mean of its divisors is an integer number (48933394).

Almost surely, 2^97866787 is an apocalyptic number.

97866787 is a deficient number, since it is larger than the sum of its proper divisors (1).

97866787 is an equidigital number, since it uses as much as digits as its factorization.

97866787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 58.

The square root of 97866787 is about 9892.7643760478. The cubic root of 97866787 is about 460.8346331025.

The spelling of 97866787 in words is "ninety-seven million, eight hundred sixty-six thousand, seven hundred eighty-seven".