663319974 has 16 divisors (see below), whose sum is σ = 1404677808. Its totient is φ = 208100352.

The previous prime is 663319973. The next prime is 663319997. The reversal of 663319974 is 479913366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663319973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251467 + ... + 3251670.

It is an arithmetic number, because the mean of its divisors is an integer number (87792363).

Almost surely, 2^663319974 is an apocalyptic number.

663319974 is an abundant number, since it is smaller than the sum of its proper divisors (741357834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663319974 is a wasteful number, since it uses less digits than its factorization.

663319974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6503159.

The product of its digits is 734832, while the sum is 48.

The square root of 663319974 is about 25754.9990099010. Note that the first 3 decimals coincide. The cubic root of 663319974 is about 872.1162091218.

The spelling of 663319974 in words is "six hundred sixty-three million, three hundred nineteen thousand, nine hundred seventy-four".