76306891 has 2 divisors, whose sum is σ = 76306892. Its totient is φ = 76306890.

The previous prime is 76306889. The next prime is 76306927. The reversal of 76306891 is 19860367.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76306891 - 2¹ = 76306889 is a prime.

It is a super-4 number, since 4×76306891⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 76306889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (76306861) 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, 38153445 + 38153446.

It is an arithmetic number, because the mean of its divisors is an integer number (38153446).

Almost surely, 2^76306891 is an apocalyptic number.

76306891 is a deficient number, since it is larger than the sum of its proper divisors (1).

76306891 is an equidigital number, since it uses as much as digits as its factorization.

76306891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 76306891 is about 8735.3815600694. The cubic root of 76306891 is about 424.1517401444.

The spelling of 76306891 in words is "seventy-six million, three hundred six thousand, eight hundred ninety-one".