77000647 has 2 divisors, whose sum is σ = 77000648. Its totient is φ = 77000646.

The previous prime is 77000641. The next prime is 77000653. The reversal of 77000647 is 74600077.

It is a balanced prime because it is at equal distance from previous prime (77000641) and next prime (77000653).

It is a cyclic number.

It is not a de Polignac number, because 77000647 - 2³ = 77000639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77000641) 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, 38500323 + 38500324.

It is an arithmetic number, because the mean of its divisors is an integer number (38500324).

Almost surely, 2^77000647 is an apocalyptic number.

77000647 is a deficient number, since it is larger than the sum of its proper divisors (1).

77000647 is an equidigital number, since it uses as much as digits as its factorization.

77000647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 77000647 is about 8775.0012535612. The cubic root of 77000647 is about 425.4332780863.

The spelling of 77000647 in words is "seventy-seven million, six hundred forty-seven", and thus it is an aban number.