77322461 has 2 divisors, whose sum is σ = 77322462. Its totient is φ = 77322460.

The previous prime is 77322449. The next prime is 77322467. The reversal of 77322461 is 16422377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76125625 + 1196836 = 8725^2 + 1094^2 .

It is an emirp because it is prime and its reverse (16422377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77322461 - 2¹⁴ = 77306077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77322467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38661230 + 38661231.

It is an arithmetic number, because the mean of its divisors is an integer number (38661231).

Almost surely, 2^77322461 is an apocalyptic number.

It is an amenable number.

77322461 is a deficient number, since it is larger than the sum of its proper divisors (1).

77322461 is an equidigital number, since it uses as much as digits as its factorization.

77322461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 32.

The square root of 77322461 is about 8793.3191116893. The cubic root of 77322461 is about 426.0251349905.

The spelling of 77322461 in words is "seventy-seven million, three hundred twenty-two thousand, four hundred sixty-one".