4266821 has 8 divisors (see below), whose sum is σ = 4673760. Its totient is φ = 3871152.

The previous prime is 4266817. The next prime is 4266827. The reversal of 4266821 is 1286624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4266821 - 2² = 4266817 is a prime.

It is a super-2 number, since 2×4266821² = 36411522892082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4266827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015 + ... + 3548.

It is an arithmetic number, because the mean of its divisors is an integer number (584220).

Almost surely, 2^4266821 is an apocalyptic number.

It is an amenable number.

4266821 is a deficient number, since it is larger than the sum of its proper divisors (406939).

4266821 is a wasteful number, since it uses less digits than its factorization.

4266821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635.

The product of its digits is 4608, while the sum is 29.

The square root of 4266821 is about 2065.6284757913. The cubic root of 4266821 is about 162.1940087886.

The spelling of 4266821 in words is "four million, two hundred sixty-six thousand, eight hundred twenty-one".