6662001 has 8 divisors (see below), whose sum is σ = 9008064. Its totient is φ = 4378640.

The previous prime is 6661997. The next prime is 6662003. The reversal of 6662001 is 1002666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6662001 - 2² = 6661997 is a prime.

6662001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6662003) 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 7 ways as a sum of consecutive naturals, for example, 15426 + ... + 15851.

It is an arithmetic number, because the mean of its divisors is an integer number (1126008).

Almost surely, 2^6662001 is an apocalyptic number.

It is an amenable number.

6662001 is a deficient number, since it is larger than the sum of its proper divisors (2346063).

6662001 is a wasteful number, since it uses less digits than its factorization.

6662001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31351.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6662001 is about 2581.0852368723. The cubic root of 6662001 is about 188.1632899255.

Adding to 6662001 its reverse (1002666), we get a palindrome (7664667).

The spelling of 6662001 in words is "six million, six hundred sixty-two thousand, one".