4261665 has 8 divisors (see below), whose sum is σ = 6818688. Its totient is φ = 2272880.

The previous prime is 4261661. The next prime is 4261709. The reversal of 4261665 is 5661624.

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

It is not a de Polignac number, because 4261665 - 2² = 4261661 is a prime.

4261665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4261661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142041 + ... + 142070.

It is an arithmetic number, because the mean of its divisors is an integer number (852336).

Almost surely, 2^4261665 is an apocalyptic number.

It is an amenable number.

4261665 is a deficient number, since it is larger than the sum of its proper divisors (2557023).

4261665 is a wasteful number, since it uses less digits than its factorization.

4261665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284119.

The product of its digits is 8640, while the sum is 30.

The square root of 4261665 is about 2064.3800522191. The cubic root of 4261665 is about 162.1286510446.

The spelling of 4261665 in words is "four million, two hundred sixty-one thousand, six hundred sixty-five".