297808065 has 12 divisors (see below), whose sum is σ = 516200724. Its totient is φ = 158830944.

The previous prime is 297808019. The next prime is 297808081. The reversal of 297808065 is 560808792.

It can be written as a sum of positive squares in 2 ways, for example, as 127035441 + 170772624 = 11271^2 + 13068^2 .

It is not a de Polignac number, because 297808065 - 2¹² = 297803969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 6617957 = 297808065 / (2 + 9 + 7 + 8 + 0 + 8 + 0 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 297808065.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3308934 + ... + 3309023.

It is an arithmetic number, because the mean of its divisors is an integer number (43016727).

Almost surely, 2^297808065 is an apocalyptic number.

It is an amenable number.

297808065 is a deficient number, since it is larger than the sum of its proper divisors (218392659).

297808065 is a wasteful number, since it uses less digits than its factorization.

297808065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617968 (or 6617965 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 297808065 is about 17257.1163581868. The cubic root of 297808065 is about 667.7985702980.

The spelling of 297808065 in words is "two hundred ninety-seven million, eight hundred eight thousand, sixty-five".