630397 has 4 divisors (see below), whose sum is σ = 632736. Its totient is φ = 628060.

The previous prime is 630391. The next prime is 630433. The reversal of 630397 is 793036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630397 - 2¹⁹ = 106109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630391) 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 3 ways as a sum of consecutive naturals, for example, 703 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (158184).

2⁶³⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

630397 is a deficient number, since it is larger than the sum of its proper divisors (2339).

630397 is a wasteful number, since it uses less digits than its factorization.

630397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 630397 is about 793.9754404262. The cubic root of 630397 is about 85.7441920775.

It can be divided in two parts, 6303 and 97, that added together give a square (6400 = 80²).

The spelling of 630397 in words is "six hundred thirty thousand, three hundred ninety-seven".