629657387 has 2 divisors, whose sum is σ = 629657388. Its totient is φ = 629657386.

The previous prime is 629657341. The next prime is 629657429. The reversal of 629657387 is 783756926.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629657387 - 2¹⁴ = 629641003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (629651387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314828693 + 314828694.

It is an arithmetic number, because the mean of its divisors is an integer number (314828694).

Almost surely, 2^629657387 is an apocalyptic number.

629657387 is a deficient number, since it is larger than the sum of its proper divisors (1).

629657387 is an equidigital number, since it uses as much as digits as its factorization.

629657387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The square root of 629657387 is about 25092.9748535322. The cubic root of 629657387 is about 857.1064584292.

The spelling of 629657387 in words is "six hundred twenty-nine million, six hundred fifty-seven thousand, three hundred eighty-seven".