1679227221 has 16 divisors (see below), whose sum is σ = 2577504384. Its totient is φ = 952552704.

The previous prime is 1679227219. The next prime is 1679227267. The reversal of 1679227221 is 1227229761.

It is not a de Polignac number, because 1679227221 - 2¹ = 1679227219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1679227221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679227021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288960 + ... + 294713.

It is an arithmetic number, because the mean of its divisors is an integer number (161094024).

Almost surely, 2^1679227221 is an apocalyptic number.

It is an amenable number.

1679227221 is a deficient number, since it is larger than the sum of its proper divisors (898277163).

1679227221 is a wasteful number, since it uses less digits than its factorization.

1679227221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583820.

The product of its digits is 42336, while the sum is 39.

The square root of 1679227221 is about 40978.3750409896. The cubic root of 1679227221 is about 1188.6020872774.

The spelling of 1679227221 in words is "one billion, six hundred seventy-nine million, two hundred twenty-seven thousand, two hundred twenty-one".