7706444221 has 8 divisors (see below), whose sum is σ = 8813323584. Its totient is φ = 6601054560.

The previous prime is 7706444183. The next prime is 7706444243. The reversal of 7706444221 is 1224446077.

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 7706444221 - 2¹⁷ = 7706313149 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 (7706424221) 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, 361315 + ... + 382048.

It is an arithmetic number, because the mean of its divisors is an integer number (1101665448).

Almost surely, 2^7706444221 is an apocalyptic number.

It is an amenable number.

7706444221 is a deficient number, since it is larger than the sum of its proper divisors (1106879363).

7706444221 is a wasteful number, since it uses less digits than its factorization.

7706444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744851.

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 7706444221 is about 87786.3555514181. The cubic root of 7706444221 is about 1975.2315465108.

The spelling of 7706444221 in words is "seven billion, seven hundred six million, four hundred forty-four thousand, two hundred twenty-one".