77306087 has 2 divisors, whose sum is σ = 77306088. Its totient is φ = 77306086.

The previous prime is 77306081. The next prime is 77306129. The reversal of 77306087 is 78060377.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77306087 - 2⁴ = 77306071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77306087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77306081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38653043 + 38653044.

It is an arithmetic number, because the mean of its divisors is an integer number (38653044).

Almost surely, 2^77306087 is an apocalyptic number.

77306087 is a deficient number, since it is larger than the sum of its proper divisors (1).

77306087 is an equidigital number, since it uses as much as digits as its factorization.

77306087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 77306087 is about 8792.3880146408. The cubic root of 77306087 is about 425.9950608140.

The spelling of 77306087 in words is "seventy-seven million, three hundred six thousand, eighty-seven".