630801923 has 2 divisors, whose sum is σ = 630801924. Its totient is φ = 630801922.

The previous prime is 630801917. The next prime is 630801929. The reversal of 630801923 is 329108036.

It is a balanced prime because it is at equal distance from previous prime (630801917) and next prime (630801929).

It is a cyclic number.

It is not a de Polignac number, because 630801923 - 2¹⁴ = 630785539 is a prime.

It is a super-2 number, since 2×630801923² = 795822132120995858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630801923.

It is not a weakly prime, because it can be changed into another prime (630801929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315400961 + 315400962.

It is an arithmetic number, because the mean of its divisors is an integer number (315400962).

Almost surely, 2^630801923 is an apocalyptic number.

630801923 is a deficient number, since it is larger than the sum of its proper divisors (1).

630801923 is an equidigital number, since it uses as much as digits as its factorization.

630801923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 630801923 is about 25115.7704042699. The cubic root of 630801923 is about 857.6254684135.

Adding to 630801923 its reverse (329108036), we get a palindrome (959909959).

The spelling of 630801923 in words is "six hundred thirty million, eight hundred one thousand, nine hundred twenty-three".