97386691 has 4 divisors (see below), whose sum is σ = 97440400. Its totient is φ = 97332984.

The previous prime is 97386673. The next prime is 97386713. The reversal of 97386691 is 19668379.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19668379 = 1499 ⋅13121.

It is a cyclic number.

It is not a de Polignac number, because 97386691 - 2⁷ = 97386563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97386631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24036 + ... + 27793.

It is an arithmetic number, because the mean of its divisors is an integer number (24360100).

Almost surely, 2^97386691 is an apocalyptic number.

97386691 is a deficient number, since it is larger than the sum of its proper divisors (53709).

97386691 is a wasteful number, since it uses less digits than its factorization.

97386691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53708.

The product of its digits is 489888, while the sum is 49.

The square root of 97386691 is about 9868.4695368634. The cubic root of 97386691 is about 460.0798396390.

The spelling of 97386691 in words is "ninety-seven million, three hundred eighty-six thousand, six hundred ninety-one".