1706073845621 has 2 divisors, whose sum is σ = 1706073845622. Its totient is φ = 1706073845620.

The previous prime is 1706073845591. The next prime is 1706073845633. The reversal of 1706073845621 is 1265483706071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1507220280721 + 198853564900 = 1227689^2 + 445930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1706073845621 - 2²⁶ = 1706006736757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1706073845621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1706073835621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853036922810 + 853036922811.

It is an arithmetic number, because the mean of its divisors is an integer number (853036922811).

Almost surely, 2^{1706073845621} is an apocalyptic number.

It is an amenable number.

1706073845621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1706073845621 is an equidigital number, since it uses as much as digits as its factorization.

1706073845621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 1706073845621 in words is "one trillion, seven hundred six billion, seventy-three million, eight hundred forty-five thousand, six hundred twenty-one".