1346082721 has 9 divisors (see below), whose sum is σ = 1421394033. Its totient is φ = 1274575860.

The previous prime is 1346082719. The next prime is 1346082743. The reversal of 1346082721 is 1272806431.

The square root of 1346082721 is 36689.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1346082721 - 2¹ = 1346082719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1346082761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 696126 + ... + 698056.

Almost surely, 2^1346082721 is an apocalyptic number.

1346082721 is the 36689-th square number.

1346082721 is the 18345-th centered octagonal number.

It is an amenable number.

1346082721 is a deficient number, since it is larger than the sum of its proper divisors (75311312).

1346082721 is an frugal number, since it uses more digits than its factorization.

1346082721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The cubic root of 1346082721 is about 1104.1394229088.

The spelling of 1346082721 in words is "one billion, three hundred forty-six million, eighty-two thousand, seven hundred twenty-one".