77326663 has 2 divisors, whose sum is σ = 77326664. Its totient is φ = 77326662.

The previous prime is 77326661. The next prime is 77326687. The reversal of 77326663 is 36662377.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77326663 - 2¹ = 77326661 is a prime.

Together with 77326661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77326661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38663331 + 38663332.

It is an arithmetic number, because the mean of its divisors is an integer number (38663332).

Almost surely, 2^77326663 is an apocalyptic number.

77326663 is a deficient number, since it is larger than the sum of its proper divisors (1).

77326663 is an equidigital number, since it uses as much as digits as its factorization.

77326663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 40.

The square root of 77326663 is about 8793.5580398380. The cubic root of 77326663 is about 426.0328521323.

The spelling of 77326663 in words is "seventy-seven million, three hundred twenty-six thousand, six hundred sixty-three".