4226666621 has 8 divisors (see below), whose sum is σ = 4341747000. Its totient is φ = 4111630848.

The previous prime is 4226666579. The next prime is 4226666657. The reversal of 4226666621 is 1266666224.

It can be written as a sum of positive squares in 4 ways, for example, as 2093520025 + 2133146596 = 45755^2 + 46186^2 .

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 4226666621 - 2²⁶ = 4159557757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4226666221) 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, 289505 + ... + 303753.

It is an arithmetic number, because the mean of its divisors is an integer number (542718375).

Almost surely, 2^4226666621 is an apocalyptic number.

It is an amenable number.

4226666621 is a deficient number, since it is larger than the sum of its proper divisors (115080379).

4226666621 is a wasteful number, since it uses less digits than its factorization.

4226666621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22303.

The product of its digits is 248832, while the sum is 41.

The square root of 4226666621 is about 65012.8188975067. The cubic root of 4226666621 is about 1616.8361025849.

The spelling of 4226666621 in words is "four billion, two hundred twenty-six million, six hundred sixty-six thousand, six hundred twenty-one".