6651429 has 4 divisors (see below), whose sum is σ = 8868576. Its totient is φ = 4434284.

The previous prime is 6651427. The next prime is 6651433. The reversal of 6651429 is 9241566.

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.

It is a cyclic number.

It is not a de Polignac number, because 6651429 - 2¹ = 6651427 is a prime.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 6651429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108569 + ... + 1108574.

It is an arithmetic number, because the mean of its divisors is an integer number (2217144).

Almost surely, 2^6651429 is an apocalyptic number.

It is an amenable number.

6651429 is a deficient number, since it is larger than the sum of its proper divisors (2217147).

6651429 is a wasteful number, since it uses less digits than its factorization.

6651429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217146.

The product of its digits is 12960, while the sum is 33.

The square root of 6651429 is about 2579.0364479782. The cubic root of 6651429 is about 188.0637044561.

The spelling of 6651429 in words is "six million, six hundred fifty-one thousand, four hundred twenty-nine".