774423997 has 2 divisors, whose sum is σ = 774423998. Its totient is φ = 774423996.

The previous prime is 774423973. The next prime is 774424003. The reversal of 774423997 is 799324477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643687641 + 130736356 = 25371^2 + 11434^2 .

It is a cyclic number.

It is not a de Polignac number, because 774423997 - 2²⁷ = 640206269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774423697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387211998 + 387211999.

It is an arithmetic number, because the mean of its divisors is an integer number (387211999).

Almost surely, 2^774423997 is an apocalyptic number.

It is an amenable number.

774423997 is a deficient number, since it is larger than the sum of its proper divisors (1).

774423997 is an equidigital number, since it uses as much as digits as its factorization.

774423997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 52.

The square root of 774423997 is about 27828.4745719200. The cubic root of 774423997 is about 918.3176552371.

The spelling of 774423997 in words is "seven hundred seventy-four million, four hundred twenty-three thousand, nine hundred ninety-seven".