664849754 has 8 divisors (see below), whose sum is σ = 1009290240. Its totient is φ = 328419676.

The previous prime is 664849723. The next prime is 664849769. The reversal of 664849754 is 457948466.

664849754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664849696 and 664849705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002394 + ... + 2002725.

It is an arithmetic number, because the mean of its divisors is an integer number (126161280).

Almost surely, 2^664849754 is an apocalyptic number.

664849754 is a deficient number, since it is larger than the sum of its proper divisors (344440486).

664849754 is a wasteful number, since it uses less digits than its factorization.

664849754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005204.

The product of its digits is 5806080, while the sum is 53.

The square root of 664849754 is about 25784.6806069030. The cubic root of 664849754 is about 872.7861329771.

The spelling of 664849754 in words is "six hundred sixty-four million, eight hundred forty-nine thousand, seven hundred fifty-four".