629605 has 4 divisors (see below), whose sum is σ = 755532. Its totient is φ = 503680.

The previous prime is 629593. The next prime is 629609. The reversal of 629605 is 506926.

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 86436 + 543169 = 294^2 + 737^2 .

It is a de Polignac number, because none of the positive numbers 2^k-629605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62956 + ... + 62965.

It is an arithmetic number, because the mean of its divisors is an integer number (188883).

2⁶²⁹⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

629605 is a deficient number, since it is larger than the sum of its proper divisors (125927).

629605 is a wasteful number, since it uses less digits than its factorization.

629605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125926.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 629605 is about 793.4765276932. The cubic root of 629605 is about 85.7082687575.

The spelling of 629605 in words is "six hundred twenty-nine thousand, six hundred five".