2197566346 has 4 divisors (see below), whose sum is σ = 3296349522. Its totient is φ = 1098783172.

The previous prime is 2197566337. The next prime is 2197566439. The reversal of 2197566346 is 6436657912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2138045121 + 59521225 = 46239^2 + 7715^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2197566346.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549391585 + ... + 549391588.

Almost surely, 2^2197566346 is an apocalyptic number.

2197566346 is a deficient number, since it is larger than the sum of its proper divisors (1098783176).

2197566346 is a wasteful number, since it uses less digits than its factorization.

2197566346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098783175.

The product of its digits is 1632960, while the sum is 49.

The square root of 2197566346 is about 46878.2075809219. The cubic root of 2197566346 is about 1300.1116957283. Note that the first 3 decimals are identical.

It can be divided in two parts, 2197566 and 346, that added together give a palindrome (2197912).

The spelling of 2197566346 in words is "two billion, one hundred ninety-seven million, five hundred sixty-six thousand, three hundred forty-six".