662129 has 12 divisors (see below), whose sum is σ = 750708. Its totient is φ = 580320.

The previous prime is 662111. The next prime is 662141. The reversal of 662129 is 921266.

It can be written as a sum of positive squares in 2 ways, for example, as 277729 + 384400 = 527^2 + 620^2 .

It is not a de Polignac number, because 662129 - 2⁸ = 661873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662098 and 662107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12467 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (62559).

2⁶⁶²¹²⁹ is an apocalyptic number.

It is an amenable number.

662129 is a deficient number, since it is larger than the sum of its proper divisors (88579).

662129 is a wasteful number, since it uses less digits than its factorization.

662129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 97 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 662129 is about 813.7130944012. The cubic root of 662129 is about 87.1593942330.

The spelling of 662129 in words is "six hundred sixty-two thousand, one hundred twenty-nine".