4625721 has 32 divisors (see below), whose sum is σ = 7372800. Its totient is φ = 2857680.

The previous prime is 4625713. The next prime is 4625723. The reversal of 4625721 is 1275264.

It is not a de Polignac number, because 4625721 - 2³ = 4625713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4625723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36360 + ... + 36486.

It is an arithmetic number, because the mean of its divisors is an integer number (230400).

Almost surely, 2^4625721 is an apocalyptic number.

It is an amenable number.

4625721 is a deficient number, since it is larger than the sum of its proper divisors (2747079).

4625721 is a wasteful number, since it uses less digits than its factorization.

4625721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 220 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 4625721 is about 2150.7489393232. The cubic root of 4625721 is about 166.6197499053.

The spelling of 4625721 in words is "four million, six hundred twenty-five thousand, seven hundred twenty-one".