77683297 has 2 divisors, whose sum is σ = 77683298. Its totient is φ = 77683296.

The previous prime is 77683279. The next prime is 77683337. The reversal of 77683297 is 79238677.

Together with previous prime (77683279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73256481 + 4426816 = 8559^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 77683297 - 2¹¹ = 77681249 is a prime.

It is a super-3 number, since 3×77683297³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77683297.

It is not a weakly prime, because it can be changed into another prime (77683597) 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, 38841648 + 38841649.

It is an arithmetic number, because the mean of its divisors is an integer number (38841649).

Almost surely, 2^77683297 is an apocalyptic number.

It is an amenable number.

77683297 is a deficient number, since it is larger than the sum of its proper divisors (1).

77683297 is an equidigital number, since it uses as much as digits as its factorization.

77683297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 77683297 is about 8813.8128525627. The cubic root of 77683297 is about 426.6868086059.

The spelling of 77683297 in words is "seventy-seven million, six hundred eighty-three thousand, two hundred ninety-seven".