4786721 has 4 divisors (see below), whose sum is σ = 4815552. Its totient is φ = 4757892.

The previous prime is 4786703. The next prime is 4786739. The reversal of 4786721 is 1276874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1276874 = 2 ⋅638437.

It is an interprime number because it is at equal distance from previous prime (4786703) and next prime (4786739).

It is a cyclic number.

It is not a de Polignac number, because 4786721 - 2⁶ = 4786657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4786751) 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 3 ways as a sum of consecutive naturals, for example, 14165 + ... + 14498.

It is an arithmetic number, because the mean of its divisors is an integer number (1203888).

Almost surely, 2^4786721 is an apocalyptic number.

It is an amenable number.

4786721 is a deficient number, since it is larger than the sum of its proper divisors (28831).

4786721 is a wasteful number, since it uses less digits than its factorization.

4786721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28830.

The product of its digits is 18816, while the sum is 35.

The square root of 4786721 is about 2187.8576279091. The cubic root of 4786721 is about 168.5308346392.

It can be divided in two parts, 47 and 86721, that added together give a palindrome (86768).

The spelling of 4786721 in words is "four million, seven hundred eighty-six thousand, seven hundred twenty-one".