722777773 has 2 divisors, whose sum is σ = 722777774. Its totient is φ = 722777772.

The previous prime is 722777771. The next prime is 722777777. The reversal of 722777773 is 377777227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709796164 + 12981609 = 26642^2 + 3603^2 .

It is a cyclic number.

It is not a de Polignac number, because 722777773 - 2¹ = 722777771 is a prime.

Together with 722777771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722777771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361388886 + 361388887.

It is an arithmetic number, because the mean of its divisors is an integer number (361388887).

Almost surely, 2^722777773 is an apocalyptic number.

It is an amenable number.

722777773 is a deficient number, since it is larger than the sum of its proper divisors (1).

722777773 is an equidigital number, since it uses as much as digits as its factorization.

722777773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411788, while the sum is 49.

The square root of 722777773 is about 26884.5266463816. The cubic root of 722777773 is about 897.4320928957.

The spelling of 722777773 in words is "seven hundred twenty-two million, seven hundred seventy-seven thousand, seven hundred seventy-three".