77228023 has 2 divisors, whose sum is σ = 77228024. Its totient is φ = 77228022.

The previous prime is 77228009. The next prime is 77228029. The reversal of 77228023 is 32082277.

It is a strong prime.

It is an emirp because it is prime and its reverse (32082277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77228023 - 2¹⁷ = 77096951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77228029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38614011 + 38614012.

It is an arithmetic number, because the mean of its divisors is an integer number (38614012).

Almost surely, 2^77228023 is an apocalyptic number.

77228023 is a deficient number, since it is larger than the sum of its proper divisors (1).

77228023 is an equidigital number, since it uses as much as digits as its factorization.

77228023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 77228023 is about 8787.9475988424. The cubic root of 77228023 is about 425.8516220084.

The spelling of 77228023 in words is "seventy-seven million, two hundred twenty-eight thousand, twenty-three".