76774387 has 2 divisors, whose sum is σ = 76774388. Its totient is φ = 76774386.

The previous prime is 76774367. The next prime is 76774403. The reversal of 76774387 is 78347767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76774387 - 2¹⁵ = 76741619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76774387.

It is not a weakly prime, because it can be changed into another prime (76774367) 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, 38387193 + 38387194.

It is an arithmetic number, because the mean of its divisors is an integer number (38387194).

Almost surely, 2^76774387 is an apocalyptic number.

76774387 is a deficient number, since it is larger than the sum of its proper divisors (1).

76774387 is an equidigital number, since it uses as much as digits as its factorization.

76774387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382976, while the sum is 49.

The square root of 76774387 is about 8762.0994630283. The cubic root of 76774387 is about 425.0161691657.

The spelling of 76774387 in words is "seventy-six million, seven hundred seventy-four thousand, three hundred eighty-seven".