630841 has 2 divisors, whose sum is σ = 630842. Its totient is φ = 630840.

The previous prime is 630827. The next prime is 630863. The reversal of 630841 is 148036.

It is an a-pointer prime, because the next prime (630863) can be obtained adding 630841 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355216 + 275625 = 596^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 630841 - 2⁷ = 630713 is a prime.

It is not a weakly prime, because it can be changed into another prime (630871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315420 + 315421.

It is an arithmetic number, because the mean of its divisors is an integer number (315421).

2⁶³⁰⁸⁴¹ is an apocalyptic number.

It is an amenable number.

630841 is a deficient number, since it is larger than the sum of its proper divisors (1).

630841 is an equidigital number, since it uses as much as digits as its factorization.

630841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 630841 is about 794.2549968367. The cubic root of 630841 is about 85.7643177479.

Adding to 630841 its reverse (148036), we get a palindrome (778877).

The spelling of 630841 in words is "six hundred thirty thousand, eight hundred forty-one".