663897411 has 24 divisors (see below), whose sum is σ = 1038057360. Its totient is φ = 419297472.

The previous prime is 663897397. The next prime is 663897427. The reversal of 663897411 is 114798366.

It is a happy number.

663897411 is a `hidden beast` number, since 6 + 638 + 9 + 7 + 4 + 1 + 1 = 666.

It is not a de Polignac number, because 663897411 - 2¹¹ = 663895363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663897431) by changing a digit.

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, 24310 + ... + 43803.

It is an arithmetic number, because the mean of its divisors is an integer number (43252390).

Almost surely, 2^663897411 is an apocalyptic number.

663897411 is a deficient number, since it is larger than the sum of its proper divisors (374159949).

663897411 is a wasteful number, since it uses less digits than its factorization.

663897411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68160 (or 68135 counting only the distinct ones).

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

The square root of 663897411 is about 25766.2067638991. The cubic root of 663897411 is about 872.3692022110.

The spelling of 663897411 in words is "six hundred sixty-three million, eight hundred ninety-seven thousand, four hundred eleven".