4646221 has 4 divisors (see below), whose sum is σ = 4687452. Its totient is φ = 4604992.

The previous prime is 4646209. The next prime is 4646233. The reversal of 4646221 is 1226464.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4646209) and next prime (4646233).

It can be written as a sum of positive squares in 2 ways, for example, as 1297321 + 3348900 = 1139^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 4646221 - 2¹⁹ = 4121933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4646281) 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, 20446 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (1171863).

Almost surely, 2^4646221 is an apocalyptic number.

It is an amenable number.

4646221 is a deficient number, since it is larger than the sum of its proper divisors (41231).

4646221 is a wasteful number, since it uses less digits than its factorization.

4646221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41230.

The product of its digits is 2304, while the sum is 25.

The square root of 4646221 is about 2155.5094525425. The cubic root of 4646221 is about 166.8655257471.

The spelling of 4646221 in words is "four million, six hundred forty-six thousand, two hundred twenty-one".