77674273 has 2 divisors, whose sum is σ = 77674274. Its totient is φ = 77674272.

The previous prime is 77674271. The next prime is 77674319. The reversal of 77674273 is 37247677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66863329 + 10810944 = 8177^2 + 3288^2 .

It is an emirp because it is prime and its reverse (37247677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77674273 - 2¹ = 77674271 is a prime.

Together with 77674271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77674271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38837136 + 38837137.

It is an arithmetic number, because the mean of its divisors is an integer number (38837137).

Almost surely, 2^77674273 is an apocalyptic number.

It is an amenable number.

77674273 is a deficient number, since it is larger than the sum of its proper divisors (1).

77674273 is an equidigital number, since it uses as much as digits as its factorization.

77674273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345744, while the sum is 43.

The square root of 77674273 is about 8813.3009139595. The cubic root of 77674273 is about 426.6702860885.

The spelling of 77674273 in words is "seventy-seven million, six hundred seventy-four thousand, two hundred seventy-three".