6662967129 has 135 divisors (see below), whose sum is σ = 12678786393. Its totient is φ = 3361726368.

The previous prime is 6662967053. The next prime is 6662967167. The reversal of 6662967129 is 9217692666.

The square root of 6662967129 is 81627.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 3303605529 + 3359361600 = 57477^2 + 57960^2 .

It is not a de Polignac number, because 6662967129 - 2¹⁷ = 6662836057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6662967629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 289694212 + ... + 289694234.

Almost surely, 2^6662967129 is an apocalyptic number.

6662967129 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6662967129 is the 81627-th square number.

6662967129 is the 40814-th centered octagonal number.

It is an amenable number.

6662967129 is a deficient number, since it is larger than the sum of its proper divisors (6015819264).

6662967129 is an equidigital number, since it uses as much as digits as its factorization.

6662967129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 46 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The cubic root of 6662967129 is about 1881.7238535209.

The spelling of 6662967129 in words is "six billion, six hundred sixty-two million, nine hundred sixty-seven thousand, one hundred twenty-nine".