1722208061 has 8 divisors (see below), whose sum is σ = 1974449280. Its totient is φ = 1471519728.

The previous prime is 1722208009. The next prime is 1722208063. The reversal of 1722208061 is 1608022271.

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

It is not a de Polignac number, because 1722208061 - 2⁶ = 1722207997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722208063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385841 + ... + 390278.

It is an arithmetic number, because the mean of its divisors is an integer number (246806160).

Almost surely, 2^1722208061 is an apocalyptic number.

It is an amenable number.

1722208061 is a deficient number, since it is larger than the sum of its proper divisors (252241219).

1722208061 is an equidigital number, since it uses as much as digits as its factorization.

1722208061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776443.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1722208061 is about 41499.4947077672. The cubic root of 1722208061 is about 1198.6577726274.

The spelling of 1722208061 in words is "one billion, seven hundred twenty-two million, two hundred eight thousand, sixty-one".