4226661 has 10 divisors (see below), whose sum is σ = 6314022. Its totient is φ = 2817720.

The previous prime is 4226657. The next prime is 4226671. The reversal of 4226661 is 1666224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 1454436 = 1665^2 + 1206^2 .

It is not a de Polignac number, because 4226661 - 2² = 4226657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4226611) 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 9 ways as a sum of consecutive naturals, for example, 26010 + ... + 26171.

Almost surely, 2^4226661 is an apocalyptic number.

It is an amenable number.

4226661 is a deficient number, since it is larger than the sum of its proper divisors (2087361).

4226661 is an equidigital number, since it uses as much as digits as its factorization.

4226661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52193 (or 52184 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 4226661 is about 2055.8844811905. The cubic root of 4226661 is about 161.6835385847.

The spelling of 4226661 in words is "four million, two hundred twenty-six thousand, six hundred sixty-one".