797977573 has 2 divisors, whose sum is σ = 797977574. Its totient is φ = 797977572.

The previous prime is 797977559. The next prime is 797977613. The reversal of 797977573 is 375779797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782153089 + 15824484 = 27967^2 + 3978^2 .

It is an emirp because it is prime and its reverse (375779797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797977573 - 2²⁹ = 261106661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797977073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398988786 + 398988787.

It is an arithmetic number, because the mean of its divisors is an integer number (398988787).

Almost surely, 2^797977573 is an apocalyptic number.

It is an amenable number.

797977573 is a deficient number, since it is larger than the sum of its proper divisors (1).

797977573 is an equidigital number, since it uses as much as digits as its factorization.

797977573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20420505, while the sum is 61.

The square root of 797977573 is about 28248.4968272650. The cubic root of 797977573 is about 927.5348337094.

The spelling of 797977573 in words is "seven hundred ninety-seven million, nine hundred seventy-seven thousand, five hundred seventy-three".