631970629 has 2 divisors, whose sum is σ = 631970630. Its totient is φ = 631970628.

The previous prime is 631970579. The next prime is 631970641. The reversal of 631970629 is 926079136.

631970629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407030625 + 224940004 = 20175^2 + 14998^2 .

It is a cyclic number.

It is not a de Polignac number, because 631970629 - 2¹⁵ = 631937861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631970659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315985314 + 315985315.

It is an arithmetic number, because the mean of its divisors is an integer number (315985315).

Almost surely, 2^631970629 is an apocalyptic number.

It is an amenable number.

631970629 is a deficient number, since it is larger than the sum of its proper divisors (1).

631970629 is an equidigital number, since it uses as much as digits as its factorization.

631970629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 631970629 is about 25139.0260153412. The cubic root of 631970629 is about 858.1547912885.

The spelling of 631970629 in words is "six hundred thirty-one million, nine hundred seventy thousand, six hundred twenty-nine".