6662129 has 4 divisors (see below), whose sum is σ = 6667584. Its totient is φ = 6656676.

The previous prime is 6662101. The next prime is 6662137. The reversal of 6662129 is 9212666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6662129 - 2⁸ = 6661873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6662095 and 6662104.

It is not an unprimeable number, because it can be changed into a prime (6662329) 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, 44 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (1666896).

Almost surely, 2^6662129 is an apocalyptic number.

It is an amenable number.

6662129 is a deficient number, since it is larger than the sum of its proper divisors (5455).

6662129 is a wasteful number, since it uses less digits than its factorization.

6662129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454.

The product of its digits is 7776, while the sum is 32.

The square root of 6662129 is about 2581.1100325248. The cubic root of 6662129 is about 188.1644950062.

The spelling of 6662129 in words is "six million, six hundred sixty-two thousand, one hundred twenty-nine".