664053377 has 8 divisors (see below), whose sum is σ = 728628264. Its totient is φ = 601406208.

The previous prime is 664053373. The next prime is 664053421. The reversal of 664053377 is 773350466.

It can be written as a sum of positive squares in 4 ways, for example, as 28206721 + 635846656 = 5311^2 + 25216^2 .

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

It is not a de Polignac number, because 664053377 - 2² = 664053373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664053373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481208 + ... + 482585.

It is an arithmetic number, because the mean of its divisors is an integer number (91078533).

Almost surely, 2^664053377 is an apocalyptic number.

It is an amenable number.

664053377 is a deficient number, since it is larger than the sum of its proper divisors (64574887).

664053377 is a wasteful number, since it uses less digits than its factorization.

664053377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963859.

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 664053377 is about 25769.2331473018. The cubic root of 664053377 is about 872.4375105969.

The spelling of 664053377 in words is "six hundred sixty-four million, fifty-three thousand, three hundred seventy-seven".