770121173 has 2 divisors, whose sum is σ = 770121174. Its totient is φ = 770121172.

The previous prime is 770121169. The next prime is 770121181. The reversal of 770121173 is 371121077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441714289 + 328406884 = 21017^2 + 18122^2 .

It is a cyclic number.

It is not a de Polignac number, because 770121173 - 2² = 770121169 is a prime.

It is a super-2 number, since 2×770121173² = 1186173242205791858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770121193) 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 as a sum of consecutive naturals, namely, 385060586 + 385060587.

It is an arithmetic number, because the mean of its divisors is an integer number (385060587).

Almost surely, 2^770121173 is an apocalyptic number.

It is an amenable number.

770121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

770121173 is an equidigital number, since it uses as much as digits as its factorization.

770121173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 770121173 is about 27751.0571510348. The cubic root of 770121173 is about 916.6137221359.

The spelling of 770121173 in words is "seven hundred seventy million, one hundred twenty-one thousand, one hundred seventy-three".