1197408663 has 20 divisors (see below), whose sum is σ = 1951334088. Its totient is φ = 725701680.

The previous prime is 1197408661. The next prime is 1197408673. The reversal of 1197408663 is 3668047911.

It is a happy number.

It is not a de Polignac number, because 1197408663 - 2¹ = 1197408661 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197408661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 671056 + ... + 672837.

Almost surely, 2^1197408663 is an apocalyptic number.

1197408663 is a deficient number, since it is larger than the sum of its proper divisors (753925425).

1197408663 is a wasteful number, since it uses less digits than its factorization.

1197408663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343916 (or 1343907 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1197408663 is about 34603.5932093764. The cubic root of 1197408663 is about 1061.8930994572.

The spelling of 1197408663 in words is "one billion, one hundred ninety-seven million, four hundred eight thousand, six hundred sixty-three".