76867121 has 2 divisors, whose sum is σ = 76867122. Its totient is φ = 76867120.

The previous prime is 76867117. The next prime is 76867123. The reversal of 76867121 is 12176867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75082225 + 1784896 = 8665^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 76867121 - 2² = 76867117 is a prime.

Together with 76867123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76867123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38433560 + 38433561.

It is an arithmetic number, because the mean of its divisors is an integer number (38433561).

Almost surely, 2^76867121 is an apocalyptic number.

It is an amenable number.

76867121 is a deficient number, since it is larger than the sum of its proper divisors (1).

76867121 is an equidigital number, since it uses as much as digits as its factorization.

76867121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 76867121 is about 8767.3896343210. The cubic root of 76867121 is about 425.1872227021.

The spelling of 76867121 in words is "seventy-six million, eight hundred sixty-seven thousand, one hundred twenty-one".