774144073 has 2 divisors, whose sum is σ = 774144074. Its totient is φ = 774144072.

The previous prime is 774144053. The next prime is 774144089. The reversal of 774144073 is 370441477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489648384 + 284495689 = 22128^2 + 16867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774144073 is a prime.

It is a super-2 number, since 2×774144073² = 1198598091522058658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (774144013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387072036 + 387072037.

It is an arithmetic number, because the mean of its divisors is an integer number (387072037).

Almost surely, 2^774144073 is an apocalyptic number.

It is an amenable number.

774144073 is a deficient number, since it is larger than the sum of its proper divisors (1).

774144073 is an equidigital number, since it uses as much as digits as its factorization.

774144073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 774144073 is about 27823.4446645271. Note that the first 3 decimals coincide. The cubic root of 774144073 is about 918.2069965923.

The spelling of 774144073 in words is "seven hundred seventy-four million, one hundred forty-four thousand, seventy-three".