4665307221 has 12 divisors (see below), whose sum is σ = 6903138060. Its totient is φ = 3034345920.

The previous prime is 4665307201. The next prime is 4665307337. The reversal of 4665307221 is 1227035664.

It can be written as a sum of positive squares in 2 ways, for example, as 2045300625 + 2620006596 = 45225^2 + 51186^2 .

It is not a de Polignac number, because 4665307221 - 2¹⁹ = 4664782933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4665307201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6321186 + ... + 6321923.

It is an arithmetic number, because the mean of its divisors is an integer number (575261505).

Almost surely, 2^4665307221 is an apocalyptic number.

4665307221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4665307221 is a deficient number, since it is larger than the sum of its proper divisors (2237830839).

4665307221 is a wasteful number, since it uses less digits than its factorization.

4665307221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643156 (or 12643153 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 4665307221 is about 68303.0542582102. The cubic root of 4665307221 is about 1670.9370267013.

The spelling of 4665307221 in words is "four billion, six hundred sixty-five million, three hundred seven thousand, two hundred twenty-one".