4601621 has 2 divisors, whose sum is σ = 4601622. Its totient is φ = 4601620.

The previous prime is 4601617. The next prime is 4601677. The reversal of 4601621 is 1261064.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3290596 + 1311025 = 1814^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 4601621 - 2² = 4601617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4601593 and 4601602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4601921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2300810 + 2300811.

It is an arithmetic number, because the mean of its divisors is an integer number (2300811).

Almost surely, 2^4601621 is an apocalyptic number.

It is an amenable number.

4601621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4601621 is an equidigital number, since it uses as much as digits as its factorization.

4601621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4601621 is about 2145.1389232402. The cubic root of 4601621 is about 166.3298830302.

Adding to 4601621 its reverse (1261064), we get a palindrome (5862685).

The spelling of 4601621 in words is "four million, six hundred one thousand, six hundred twenty-one".