1722050065 has 4 divisors (see below), whose sum is σ = 2066460084. Its totient is φ = 1377640048.

The previous prime is 1722050063. The next prime is 1722050119. The reversal of 1722050065 is 5600502271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 943472656 + 778577409 = 30716^2 + 27903^2 .

It is a cyclic number.

It is not a de Polignac number, because 1722050065 - 2¹ = 1722050063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1722050063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172205002 + ... + 172205011.

It is an arithmetic number, because the mean of its divisors is an integer number (516615021).

Almost surely, 2^1722050065 is an apocalyptic number.

It is an amenable number.

1722050065 is a deficient number, since it is larger than the sum of its proper divisors (344410019).

1722050065 is an equidigital number, since it uses as much as digits as its factorization.

1722050065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344410018.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1722050065 is about 41497.5910746636. The cubic root of 1722050065 is about 1198.6211164050.

The spelling of 1722050065 in words is "one billion, seven hundred twenty-two million, fifty thousand, sixty-five".