76840193 has 2 divisors, whose sum is σ = 76840194. Its totient is φ = 76840192.

The previous prime is 76840147. The next prime is 76840201. The reversal of 76840193 is 39104867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61340224 + 15499969 = 7832^2 + 3937^2 .

It is an emirp because it is prime and its reverse (39104867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76840193 - 2¹⁴ = 76823809 is a prime.

It is not a weakly prime, because it can be changed into another prime (76840793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38420096 + 38420097.

It is an arithmetic number, because the mean of its divisors is an integer number (38420097).

Almost surely, 2^76840193 is an apocalyptic number.

It is an amenable number.

76840193 is a deficient number, since it is larger than the sum of its proper divisors (1).

76840193 is an equidigital number, since it uses as much as digits as its factorization.

76840193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 76840193 is about 8765.8538089567. The cubic root of 76840193 is about 425.1375665395.

The spelling of 76840193 in words is "seventy-six million, eight hundred forty thousand, one hundred ninety-three".