4063621 has 4 divisors (see below), whose sum is σ = 4105612. Its totient is φ = 4021632.

The previous prime is 4063603. The next prime is 4063627. The reversal of 4063621 is 1263604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 1221025 = 1686^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 4063621 - 2⁵ = 4063589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4063592 and 4063601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4063627) 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, 20850 + ... + 21043.

It is an arithmetic number, because the mean of its divisors is an integer number (1026403).

Almost surely, 2^4063621 is an apocalyptic number.

It is an amenable number.

4063621 is a deficient number, since it is larger than the sum of its proper divisors (41991).

4063621 is an equidigital number, since it uses as much as digits as its factorization.

4063621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41990.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4063621 is about 2015.8425037686. The cubic root of 4063621 is about 159.5772826086.

The spelling of 4063621 in words is "four million, sixty-three thousand, six hundred twenty-one".