76806397 has 2 divisors, whose sum is σ = 76806398. Its totient is φ = 76806396.

The previous prime is 76806383. The next prime is 76806409. The reversal of 76806397 is 79360867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 21288996 = 7451^2 + 4614^2 .

It is a cyclic number.

It is not a de Polignac number, because 76806397 - 2¹¹ = 76804349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76806307) 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, 38403198 + 38403199.

It is an arithmetic number, because the mean of its divisors is an integer number (38403199).

Almost surely, 2^76806397 is an apocalyptic number.

It is an amenable number.

76806397 is a deficient number, since it is larger than the sum of its proper divisors (1).

76806397 is an equidigital number, since it uses as much as digits as its factorization.

76806397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 76806397 is about 8763.9258896912. The cubic root of 76806397 is about 425.0752291281.

The spelling of 76806397 in words is "seventy-six million, eight hundred six thousand, three hundred ninety-seven".