4654368721 has 4 divisors (see below), whose sum is σ = 4654506852. Its totient is φ = 4654230592.

The previous prime is 4654368707. The next prime is 4654368743. The reversal of 4654368721 is 1278634564.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1558670400 + 3095698321 = 39480^2 + 55639^2 .

It is a cyclic number.

It is not a de Polignac number, because 4654368721 - 2⁹ = 4654368209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4654368791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18405 + ... + 98221.

It is an arithmetic number, because the mean of its divisors is an integer number (1163626713).

Almost surely, 2^4654368721 is an apocalyptic number.

It is an amenable number.

4654368721 is a deficient number, since it is larger than the sum of its proper divisors (138131).

4654368721 is an equidigital number, since it uses as much as digits as its factorization.

4654368721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138130.

The product of its digits is 967680, while the sum is 46.

The square root of 4654368721 is about 68222.9339811767. The cubic root of 4654368721 is about 1669.6300853978.

The spelling of 4654368721 in words is "four billion, six hundred fifty-four million, three hundred sixty-eight thousand, seven hundred twenty-one".