2682447221 has 8 divisors (see below), whose sum is σ = 2841847704. Its totient is φ = 2523225600.

The previous prime is 2682447211. The next prime is 2682447233. The reversal of 2682447221 is 1227442862.

It can be written as a sum of positive squares in 4 ways, for example, as 811452196 + 1870995025 = 28486^2 + 43255^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2682447221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2682447211) 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, 13190 + ... + 74423.

It is an arithmetic number, because the mean of its divisors is an integer number (355230963).

Almost surely, 2^2682447221 is an apocalyptic number.

It is an amenable number.

2682447221 is a deficient number, since it is larger than the sum of its proper divisors (159400483).

2682447221 is a wasteful number, since it uses less digits than its factorization.

2682447221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89431.

The product of its digits is 86016, while the sum is 38.

The square root of 2682447221 is about 51792.3471277369. The cubic root of 2682447221 is about 1389.4525769080.

The spelling of 2682447221 in words is "two billion, six hundred eighty-two million, four hundred forty-seven thousand, two hundred twenty-one".