97866811 has 4 divisors (see below), whose sum is σ = 111847792. Its totient is φ = 83885832.

The previous prime is 97866809. The next prime is 97866869. The reversal of 97866811 is 11866879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97866811 - 2¹ = 97866809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97866871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6990480 + ... + 6990493.

It is an arithmetic number, because the mean of its divisors is an integer number (27961948).

Almost surely, 2^97866811 is an apocalyptic number.

97866811 is a deficient number, since it is larger than the sum of its proper divisors (13980981).

97866811 is a wasteful number, since it uses less digits than its factorization.

97866811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13980980.

The product of its digits is 145152, while the sum is 46.

The square root of 97866811 is about 9892.7655890555. The cubic root of 97866811 is about 460.8346707728.

The spelling of 97866811 in words is "ninety-seven million, eight hundred sixty-six thousand, eight hundred eleven".