77361233 has 2 divisors, whose sum is σ = 77361234. Its totient is φ = 77361232.

The previous prime is 77361211. The next prime is 77361287. The reversal of 77361233 is 33216377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58629649 + 18731584 = 7657^2 + 4328^2 .

It is a cyclic number.

It is not a de Polignac number, because 77361233 - 2¹⁶ = 77295697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77361233.

It is not a weakly prime, because it can be changed into another prime (77361433) 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, 38680616 + 38680617.

It is an arithmetic number, because the mean of its divisors is an integer number (38680617).

Almost surely, 2^77361233 is an apocalyptic number.

It is an amenable number.

77361233 is a deficient number, since it is larger than the sum of its proper divisors (1).

77361233 is an equidigital number, since it uses as much as digits as its factorization.

77361233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 32.

The square root of 77361233 is about 8795.5234636717. The cubic root of 77361233 is about 426.0963307173.

The spelling of 77361233 in words is "seventy-seven million, three hundred sixty-one thousand, two hundred thirty-three".