77098361 has 2 divisors, whose sum is σ = 77098362. Its totient is φ = 77098360.

The previous prime is 77098339. The next prime is 77098363. The reversal of 77098361 is 16389077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 23222761 = 7340^2 + 4819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77098361 is a prime.

Together with 77098363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77098363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38549180 + 38549181.

It is an arithmetic number, because the mean of its divisors is an integer number (38549181).

Almost surely, 2^77098361 is an apocalyptic number.

It is an amenable number.

77098361 is a deficient number, since it is larger than the sum of its proper divisors (1).

77098361 is an equidigital number, since it uses as much as digits as its factorization.

77098361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 77098361 is about 8780.5672368020. The cubic root of 77098361 is about 425.6131606235.

The spelling of 77098361 in words is "seventy-seven million, ninety-eight thousand, three hundred sixty-one".