97130609 has 4 divisors (see below), whose sum is σ = 98963316. Its totient is φ = 95297904.

The previous prime is 97130581. The next prime is 97130617. The reversal of 97130609 is 90603179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90603179 = 1049 ⋅86371.

It can be written as a sum of positive squares in 2 ways, for example, as 29430625 + 67699984 = 5425^2 + 8228^2 .

It is a cyclic number.

It is not a de Polignac number, because 97130609 - 2²⁰ = 96082033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97130629) 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, 916274 + ... + 916379.

It is an arithmetic number, because the mean of its divisors is an integer number (24740829).

Almost surely, 2^97130609 is an apocalyptic number.

It is an amenable number.

97130609 is a deficient number, since it is larger than the sum of its proper divisors (1832707).

97130609 is a wasteful number, since it uses less digits than its factorization.

97130609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832706.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 97130609 is about 9855.4862386389. The cubic root of 97130609 is about 459.6762198544.

The spelling of 97130609 in words is "ninety-seven million, one hundred thirty thousand, six hundred nine".