97945785 has 48 divisors (see below), whose sum is σ = 194987520. Its totient is φ = 44553600.

The previous prime is 97945781. The next prime is 97945807. The reversal of 97945785 is 58754979.

It is not a de Polignac number, because 97945785 - 2² = 97945781 is a prime.

Together with 97041735 it forms an amicable pair .

It is not an unprimeable number, because it can be changed into a prime (97945781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74635 + ... + 75935.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^97945785 is an apocalyptic number.

It is an amenable number.

97945785 is a deficient number, since it is larger than the sum of its proper divisors (97041735).

97945785 is a wasteful number, since it uses less digits than its factorization.

97945785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1555 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 97945785 is about 9896.7562867841. The cubic root of 97945785 is about 460.9585948825.

It can be divided in two parts, 979 and 45785, that added together give a palindrome (46764).

The spelling of 97945785 in words is "ninety-seven million, nine hundred forty-five thousand, seven hundred eighty-five".