663370 has 8 divisors (see below), whose sum is σ = 1194084. Its totient is φ = 265344.

The previous prime is 663359. The next prime is 663371. The reversal of 663370 is 73366.

It is a happy number.

663370 is nontrivially palindromic in base 4.

663370 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 660969 + 2401 = 813^2 + 49^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 663370.

It is not an unprimeable number, because it can be changed into a prime (663371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33159 + ... + 33178.

2⁶⁶³³⁷⁰ is an apocalyptic number.

663370 is a deficient number, since it is larger than the sum of its proper divisors (530714).

663370 is a wasteful number, since it uses less digits than its factorization.

663370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66344.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 663370 is about 814.4752912151. The cubic root of 663370 is about 87.2138132874.

The spelling of 663370 in words is "six hundred sixty-three thousand, three hundred seventy".