2197460665 has 4 divisors (see below), whose sum is σ = 2636952804. Its totient is φ = 1757968528.

The previous prime is 2197460659. The next prime is 2197460669. The reversal of 2197460665 is 5660647912.

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 507510784 + 1689949881 = 22528^2 + 41109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197460665 - 2⁷ = 2197460537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197460669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219746062 + ... + 219746071.

It is an arithmetic number, because the mean of its divisors is an integer number (659238201).

Almost surely, 2^2197460665 is an apocalyptic number.

It is an amenable number.

2197460665 is a deficient number, since it is larger than the sum of its proper divisors (439492139).

2197460665 is an equidigital number, since it uses as much as digits as its factorization.

2197460665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439492138.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 2197460665 is about 46877.0803805015. The cubic root of 2197460665 is about 1300.0908545969.

The spelling of 2197460665 in words is "two billion, one hundred ninety-seven million, four hundred sixty thousand, six hundred sixty-five".