77123803 has 2 divisors, whose sum is σ = 77123804. Its totient is φ = 77123802.

The previous prime is 77123771. The next prime is 77123819. The reversal of 77123803 is 30832177.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77123803 - 2⁵ = 77123771 is a prime.

It is not a weakly prime, because it can be changed into another prime (77123833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38561901 + 38561902.

It is an arithmetic number, because the mean of its divisors is an integer number (38561902).

Almost surely, 2^77123803 is an apocalyptic number.

77123803 is a deficient number, since it is larger than the sum of its proper divisors (1).

77123803 is an equidigital number, since it uses as much as digits as its factorization.

77123803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 77123803 is about 8782.0158847499. The cubic root of 77123803 is about 425.6599720776.

The spelling of 77123803 in words is "seventy-seven million, one hundred twenty-three thousand, eight hundred three".