721960441 has 2 divisors, whose sum is σ = 721960442. Its totient is φ = 721960440.

The previous prime is 721960397. The next prime is 721960453. The reversal of 721960441 is 144069127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623950441 + 98010000 = 24979^2 + 9900^2 .

It is a cyclic number.

It is not a de Polignac number, because 721960441 - 2¹⁵ = 721927673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721960397 and 721960406.

It is not a weakly prime, because it can be changed into another prime (721960241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360980220 + 360980221.

It is an arithmetic number, because the mean of its divisors is an integer number (360980221).

Almost surely, 2^721960441 is an apocalyptic number.

It is an amenable number.

721960441 is a deficient number, since it is larger than the sum of its proper divisors (1).

721960441 is an equidigital number, since it uses as much as digits as its factorization.

721960441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 721960441 is about 26869.3215582381. The cubic root of 721960441 is about 897.0936870702.

The spelling of 721960441 in words is "seven hundred twenty-one million, nine hundred sixty thousand, four hundred forty-one".