77894671 has 2 divisors, whose sum is σ = 77894672. Its totient is φ = 77894670.

The previous prime is 77894653. The next prime is 77894689. The reversal of 77894671 is 17649877.

It is a balanced prime because it is at equal distance from previous prime (77894653) and next prime (77894689).

It is a cyclic number.

It is not a de Polignac number, because 77894671 - 2⁵ = 77894639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77894611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38947335 + 38947336.

It is an arithmetic number, because the mean of its divisors is an integer number (38947336).

Almost surely, 2^77894671 is an apocalyptic number.

77894671 is a deficient number, since it is larger than the sum of its proper divisors (1).

77894671 is an equidigital number, since it uses as much as digits as its factorization.

77894671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 49.

The square root of 77894671 is about 8825.7957714871. The cubic root of 77894671 is about 427.0734589434.

The spelling of 77894671 in words is "seventy-seven million, eight hundred ninety-four thousand, six hundred seventy-one".