774672397 has 2 divisors, whose sum is σ = 774672398. Its totient is φ = 774672396.

The previous prime is 774672343. The next prime is 774672461. The reversal of 774672397 is 793276477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738263241 + 36409156 = 27171^2 + 6034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774672397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774672317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387336198 + 387336199.

It is an arithmetic number, because the mean of its divisors is an integer number (387336199).

Almost surely, 2^774672397 is an apocalyptic number.

It is an amenable number.

774672397 is a deficient number, since it is larger than the sum of its proper divisors (1).

774672397 is an equidigital number, since it uses as much as digits as its factorization.

774672397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3111696, while the sum is 52.

The square root of 774672397 is about 27832.9372686391. The cubic root of 774672397 is about 918.4158295884.

The spelling of 774672397 in words is "seven hundred seventy-four million, six hundred seventy-two thousand, three hundred ninety-seven".