77467121 has 2 divisors, whose sum is σ = 77467122. Its totient is φ = 77467120.

The previous prime is 77467087. The next prime is 77467127. The reversal of 77467121 is 12176477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76387600 + 1079521 = 8740^2 + 1039^2 .

It is an emirp because it is prime and its reverse (12176477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77467121 - 2⁶ = 77467057 is a prime.

It is not a weakly prime, because it can be changed into another prime (77467127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38733560 + 38733561.

It is an arithmetic number, because the mean of its divisors is an integer number (38733561).

Almost surely, 2^77467121 is an apocalyptic number.

It is an amenable number.

77467121 is a deficient number, since it is larger than the sum of its proper divisors (1).

77467121 is an equidigital number, since it uses as much as digits as its factorization.

77467121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 35.

The square root of 77467121 is about 8801.5408310136. The cubic root of 77467121 is about 426.2906481934.

The spelling of 77467121 in words is "seventy-seven million, four hundred sixty-seven thousand, one hundred twenty-one".