4721618 has 16 divisors (see below), whose sum is σ = 7781184. Its totient is φ = 2130960.

The previous prime is 4721617. The next prime is 4721627. The reversal of 4721618 is 8161274.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4721617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (486324).

Almost surely, 2^4721618 is an apocalyptic number.

4721618 is a deficient number, since it is larger than the sum of its proper divisors (3059566).

4721618 is a wasteful number, since it uses less digits than its factorization.

4721618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 2688, while the sum is 29.

The square root of 4721618 is about 2172.9284387664. The cubic root of 4721618 is about 167.7632957139.

The spelling of 4721618 in words is "four million, seven hundred twenty-one thousand, six hundred eighteen".