297345690 has 48 divisors (see below), whose sum is σ = 794002248. Its totient is φ = 77148288.

The previous prime is 297345677. The next prime is 297345701. The reversal of 297345690 is 96543792.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 229431609 + 67914081 = 15147^2 + 8241^2 .

It is a super-2 number, since 2×297345690² = 176828918723152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 41317 + ... + 47976.

Almost surely, 2^297345690 is an apocalyptic number.

297345690 is an abundant number, since it is smaller than the sum of its proper divisors (496656558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

297345690 is a wasteful number, since it uses less digits than its factorization.

297345690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89343 (or 89340 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 297345690 is about 17243.7145070313. The cubic root of 297345690 is about 667.4527846080.

The spelling of 297345690 in words is "two hundred ninety-seven million, three hundred forty-five thousand, six hundred ninety".