5665001 has 4 divisors (see below), whose sum is σ = 5673600. Its totient is φ = 5656404.

The previous prime is 5664991. The next prime is 5665013. The reversal of 5665001 is 1005665.

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 a de Polignac number, because none of the positive numbers 2^k-5665001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5665081) 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, 3221 + ... + 4658.

It is an arithmetic number, because the mean of its divisors is an integer number (1418400).

Almost surely, 2^5665001 is an apocalyptic number.

It is an amenable number.

5665001 is a deficient number, since it is larger than the sum of its proper divisors (8599).

5665001 is an equidigital number, since it uses as much as digits as its factorization.

5665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 5665001 is about 2380.1262571553. The cubic root of 5665001 is about 178.2652381198.

The spelling of 5665001 in words is "five million, six hundred sixty-five thousand, one".