77268871 has 2 divisors, whose sum is σ = 77268872. Its totient is φ = 77268870.

The previous prime is 77268869. The next prime is 77268911. The reversal of 77268871 is 17886277.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77268871 - 2¹ = 77268869 is a prime.

It is a super-2 number, since 2×77268871² = 11940956851229282, which contains 22 as substring.

Together with 77268869, 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 (77268071) 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, 38634435 + 38634436.

It is an arithmetic number, because the mean of its divisors is an integer number (38634436).

Almost surely, 2^77268871 is an apocalyptic number.

77268871 is a deficient number, since it is larger than the sum of its proper divisors (1).

77268871 is an equidigital number, since it uses as much as digits as its factorization.

77268871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 46.

The square root of 77268871 is about 8790.2713837515. The cubic root of 77268871 is about 425.9266902731.

The spelling of 77268871 in words is "seventy-seven million, two hundred sixty-eight thousand, eight hundred seventy-one".