663379199 has 24 divisors (see below), whose sum is σ = 807929856. Its totient is φ = 542430000.

The previous prime is 663379187. The next prime is 663379201. The reversal of 663379199 is 991973366.

It is a happy number.

It is not a de Polignac number, because 663379199 - 2¹⁶ = 663313663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663379199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663379109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104774 + ... + 110924.

It is an arithmetic number, because the mean of its divisors is an integer number (33663744).

Almost surely, 2^663379199 is an apocalyptic number.

663379199 is a deficient number, since it is larger than the sum of its proper divisors (144550657).

663379199 is a wasteful number, since it uses less digits than its factorization.

663379199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267 (or 6260 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 53.

The square root of 663379199 is about 25756.1487610240. The cubic root of 663379199 is about 872.1421641899.

The spelling of 663379199 in words is "six hundred sixty-three million, three hundred seventy-nine thousand, one hundred ninety-nine".