4721065 has 8 divisors (see below), whose sum is σ = 5704200. Its totient is φ = 3750912.

The previous prime is 4721047. The next prime is 4721077. The reversal of 4721065 is 5601274.

It can be written as a sum of positive squares in 4 ways, for example, as 3481 + 4717584 = 59^2 + 2172^2 .

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 4721065 - 2⁹ = 4720553 is a prime.

4721065 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2424 + ... + 3913.

It is an arithmetic number, because the mean of its divisors is an integer number (713025).

Almost surely, 2^4721065 is an apocalyptic number.

It is an amenable number.

4721065 is a deficient number, since it is larger than the sum of its proper divisors (983135).

4721065 is a wasteful number, since it uses less digits than its factorization.

4721065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6491.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4721065 is about 2172.8011874076. The cubic root of 4721065 is about 167.7567459306.

It can be divided in two parts, 47 and 21065, that added together give a palindrome (21112).

The spelling of 4721065 in words is "four million, seven hundred twenty-one thousand, sixty-five".