630997 has 2 divisors, whose sum is σ = 630998. Its totient is φ = 630996.

The previous prime is 630967. The next prime is 631003. The reversal of 630997 is 799036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391876 + 239121 = 626^2 + 489^2 .

It is a cyclic number.

It is not a de Polignac number, because 630997 - 2¹⁵ = 598229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315498 + 315499.

It is an arithmetic number, because the mean of its divisors is an integer number (315499).

2⁶³⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

630997 is a deficient number, since it is larger than the sum of its proper divisors (1).

630997 is an equidigital number, since it uses as much as digits as its factorization.

630997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 630997 is about 794.3531960029. The cubic root of 630997 is about 85.7713866876.

The spelling of 630997 in words is "six hundred thirty thousand, nine hundred ninety-seven".