663675954 has 32 divisors (see below), whose sum is σ = 1406782080. Its totient is φ = 208012032.

The previous prime is 663675917. The next prime is 663675959. The reversal of 663675954 is 459576366.

It is a happy number.

663675954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 663675897 and 663675906.

It is not an unprimeable number, because it can be changed into a prime (663675959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132072 + ... + 137004.

It is an arithmetic number, because the mean of its divisors is an integer number (43961940).

Almost surely, 2^663675954 is an apocalyptic number.

663675954 is an abundant number, since it is smaller than the sum of its proper divisors (743106126).

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

663675954 is a wasteful number, since it uses less digits than its factorization.

663675954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6274.

The product of its digits is 4082400, while the sum is 51.

The square root of 663675954 is about 25761.9089742977. The cubic root of 663675954 is about 872.2721923676.

The spelling of 663675954 in words is "six hundred sixty-three million, six hundred seventy-five thousand, nine hundred fifty-four".