663146446627 has 8 divisors (see below), whose sum is σ = 768263594336. Its totient is φ = 560624784192.

The previous prime is 663146446553. The next prime is 663146446631. The reversal of 663146446627 is 726644641366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663146446627 - 2³⁹ = 113390632739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663146446667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648870768 + ... + 648871789.

It is an arithmetic number, because the mean of its divisors is an integer number (96032949292).

Almost surely, 2^663146446627 is an apocalyptic number.

663146446627 is a deficient number, since it is larger than the sum of its proper divisors (105117147709).

663146446627 is a wasteful number, since it uses less digits than its factorization.

663146446627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297742637.

The product of its digits is 20901888, while the sum is 55.

The spelling of 663146446627 in words is "six hundred sixty-three billion, one hundred forty-six million, four hundred forty-six thousand, six hundred twenty-seven".