97685811 has 8 divisors (see below), whose sum is σ = 144719760. Its totient is φ = 65123856.

The previous prime is 97685789. The next prime is 97685813. The reversal of 97685811 is 11858679.

97685811 is a `hidden beast` number, since 9 + 7 + 68 + 581 + 1 = 666.

It is not a de Polignac number, because 97685811 - 2⁵ = 97685779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97685813) 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 in 7 ways as a sum of consecutive naturals, for example, 1808970 + ... + 1809023.

It is an arithmetic number, because the mean of its divisors is an integer number (18089970).

Almost surely, 2^97685811 is an apocalyptic number.

97685811 is a deficient number, since it is larger than the sum of its proper divisors (47033949).

97685811 is a wasteful number, since it uses less digits than its factorization.

97685811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618002 (or 3617996 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 97685811 is about 9883.6132562945. The cubic root of 97685811 is about 460.5503982019.

The spelling of 97685811 in words is "ninety-seven million, six hundred eighty-five thousand, eight hundred eleven".