4721745 has 32 divisors (see below), whose sum is σ = 8716032. Its totient is φ = 2138112.

The previous prime is 4721741. The next prime is 4721749. The reversal of 4721745 is 5471274.

It is an interprime number because it is at equal distance from previous prime (4721741) and next prime (4721749).

It is not a de Polignac number, because 4721745 - 2² = 4721741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4721741) 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 31 ways as a sum of consecutive naturals, for example, 20149 + ... + 20381.

It is an arithmetic number, because the mean of its divisors is an integer number (272376).

Almost surely, 2^4721745 is an apocalyptic number.

It is an amenable number.

4721745 is a deficient number, since it is larger than the sum of its proper divisors (3994287).

4721745 is a wasteful number, since it uses less digits than its factorization.

4721745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its digits is 7840, while the sum is 30.

The square root of 4721745 is about 2172.9576618057. The cubic root of 4721745 is about 167.7647998415.

The spelling of 4721745 in words is "four million, seven hundred twenty-one thousand, seven hundred forty-five".