97657705 has 4 divisors (see below), whose sum is σ = 117189252. Its totient is φ = 78126160.

The previous prime is 97657697. The next prime is 97657709. The reversal of 97657705 is 50775679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50775679 = 431 ⋅117809.

It can be written as a sum of positive squares in 2 ways, for example, as 26491609 + 71166096 = 5147^2 + 8436^2 .

It is not a de Polignac number, because 97657705 - 2³ = 97657697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97657709) 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 3 ways as a sum of consecutive naturals, for example, 9765766 + ... + 9765775.

It is an arithmetic number, because the mean of its divisors is an integer number (29297313).

Almost surely, 2^97657705 is an apocalyptic number.

It is an amenable number.

97657705 is a deficient number, since it is larger than the sum of its proper divisors (19531547).

97657705 is a wasteful number, since it uses less digits than its factorization.

97657705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19531546.

The product of its (nonzero) digits is 463050, while the sum is 46.

The square root of 97657705 is about 9882.1913055759. The cubic root of 97657705 is about 460.5062243654.

The spelling of 97657705 in words is "ninety-seven million, six hundred fifty-seven thousand, seven hundred five".