97207745 has 4 divisors (see below), whose sum is σ = 116649300. Its totient is φ = 77766192.

The previous prime is 97207697. The next prime is 97207811. The reversal of 97207745 is 54770279.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46840336 + 50367409 = 6844^2 + 7097^2 .

It is a cyclic number.

It is not a de Polignac number, because 97207745 - 2¹⁰ = 97206721 is a prime.

It is an unprimeable number.

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, 9720770 + ... + 9720779.

It is an arithmetic number, because the mean of its divisors is an integer number (29162325).

Almost surely, 2^97207745 is an apocalyptic number.

It is an amenable number.

97207745 is a deficient number, since it is larger than the sum of its proper divisors (19441555).

97207745 is a wasteful number, since it uses less digits than its factorization.

97207745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19441554.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 97207745 is about 9859.3988153437. The cubic root of 97207745 is about 459.7978711829.

The spelling of 97207745 in words is "ninety-seven million, two hundred seven thousand, seven hundred forty-five".