97825865 has 8 divisors (see below), whose sum is σ = 118468680. Its totient is φ = 77542272.

The previous prime is 97825853. The next prime is 97825867. The reversal of 97825865 is 56852879.

It can be written as a sum of positive squares in 4 ways, for example, as 13424896 + 84400969 = 3664^2 + 9187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97825865 - 2¹⁰ = 97824841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97825867) 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 7 ways as a sum of consecutive naturals, for example, 89204 + ... + 90293.

It is an arithmetic number, because the mean of its divisors is an integer number (14808585).

Almost surely, 2^97825865 is an apocalyptic number.

It is an amenable number.

97825865 is a deficient number, since it is larger than the sum of its proper divisors (20642815).

97825865 is a wasteful number, since it uses less digits than its factorization.

97825865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179611.

The product of its digits is 1209600, while the sum is 50.

The square root of 97825865 is about 9890.6958804727. The cubic root of 97825865 is about 460.7703930455.

The spelling of 97825865 in words is "ninety-seven million, eight hundred twenty-five thousand, eight hundred sixty-five".