662149129 has 4 divisors (see below), whose sum is σ = 662243140. Its totient is φ = 662055120.

The previous prime is 662149109. The next prime is 662149219. The reversal of 662149129 is 921941266.

662149129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 429525625 + 232623504 = 20725^2 + 15252^2 .

It is a cyclic number.

It is not a de Polignac number, because 662149129 - 2⁵ = 662149097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662149091 and 662149100.

It is not an unprimeable number, because it can be changed into a prime (662149109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35502 + ... + 50839.

It is an arithmetic number, because the mean of its divisors is an integer number (165560785).

Almost surely, 2^662149129 is an apocalyptic number.

It is an amenable number.

662149129 is a deficient number, since it is larger than the sum of its proper divisors (94011).

662149129 is an equidigital number, since it uses as much as digits as its factorization.

662149129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94010.

The product of its digits is 46656, while the sum is 40.

The square root of 662149129 is about 25732.2585289360. The cubic root of 662149129 is about 871.6027745144.

The spelling of 662149129 in words is "six hundred sixty-two million, one hundred forty-nine thousand, one hundred twenty-nine".