629687 has 2 divisors, whose sum is σ = 629688. Its totient is φ = 629686.

The previous prime is 629683. The next prime is 629689. The reversal of 629687 is 786926.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629687 - 2² = 629683 is a prime.

Together with 629689, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 629687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314843 + 314844.

It is an arithmetic number, because the mean of its divisors is an integer number (314844).

2⁶²⁹⁶⁸⁷ is an apocalyptic number.

629687 is a deficient number, since it is larger than the sum of its proper divisors (1).

629687 is an equidigital number, since it uses as much as digits as its factorization.

629687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 629687 is about 793.5281973566. The cubic root of 629687 is about 85.7119894888.

The spelling of 629687 in words is "six hundred twenty-nine thousand, six hundred eighty-seven".