4420661 has 16 divisors (see below), whose sum is σ = 5271168. Its totient is φ = 3628800.

The previous prime is 4420639. The next prime is 4420667. The reversal of 4420661 is 1660244.

It is a happy number.

It is not a de Polignac number, because 4420661 - 2²² = 226357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420667) 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 in 15 ways as a sum of consecutive naturals, for example, 20846 + ... + 21056.

It is an arithmetic number, because the mean of its divisors is an integer number (329448).

Almost surely, 2^4420661 is an apocalyptic number.

4420661 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4420661 is a deficient number, since it is larger than the sum of its proper divisors (850507).

4420661 is a wasteful number, since it uses less digits than its factorization.

4420661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4420661 is about 2102.5368011048. The cubic root of 4420661 is about 164.1203385067.

The spelling of 4420661 in words is "four million, four hundred twenty thousand, six hundred sixty-one".