664662146 has 8 divisors (see below), whose sum is σ = 1008195660. Its totient is φ = 328596928.

The previous prime is 664662101. The next prime is 664662179. The reversal of 664662146 is 641266466.

664662146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 658486921 + 6175225 = 25661^2 + 2485^2 .

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

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, 1866851 + ... + 1867206.

Almost surely, 2^664662146 is an apocalyptic number.

664662146 is a deficient number, since it is larger than the sum of its proper divisors (343533514).

664662146 is a wasteful number, since it uses less digits than its factorization.

664662146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734148.

The product of its digits is 248832, while the sum is 41.

The square root of 664662146 is about 25781.0423761337. The cubic root of 664662146 is about 872.7040306856.

The spelling of 664662146 in words is "six hundred sixty-four million, six hundred sixty-two thousand, one hundred forty-six".