629687269 has 4 divisors (see below), whose sum is σ = 638313196. Its totient is φ = 621061344.

The previous prime is 629687249. The next prime is 629687273. The reversal of 629687269 is 962786926.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 497736100 + 131951169 = 22310^2 + 11487^2 .

It is a cyclic number.

It is not a de Polignac number, because 629687269 - 2¹³ = 629679077 is a prime.

It is a super-2 number, since 2×629687269² = 793012113481356722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629687249) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4312854 + ... + 4312999.

It is an arithmetic number, because the mean of its divisors is an integer number (159578299).

Almost surely, 2^629687269 is an apocalyptic number.

It is an amenable number.

629687269 is a deficient number, since it is larger than the sum of its proper divisors (8625927).

629687269 is an equidigital number, since it uses as much as digits as its factorization.

629687269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625926.

The product of its digits is 3919104, while the sum is 55.

The square root of 629687269 is about 25093.5702720836. The cubic root of 629687269 is about 857.1200169403.

The spelling of 629687269 in words is "six hundred twenty-nine million, six hundred eighty-seven thousand, two hundred sixty-nine".