78871763 has 2 divisors, whose sum is σ = 78871764. Its totient is φ = 78871762.

The previous prime is 78871747. The next prime is 78871787. The reversal of 78871763 is 36717887.

It is a weak prime.

It is an emirp because it is prime and its reverse (36717887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78871763 - 2⁴ = 78871747 is a prime.

It is not a weakly prime, because it can be changed into another prime (78871703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39435881 + 39435882.

It is an arithmetic number, because the mean of its divisors is an integer number (39435882).

Almost surely, 2^78871763 is an apocalyptic number.

78871763 is a deficient number, since it is larger than the sum of its proper divisors (1).

78871763 is an equidigital number, since it uses as much as digits as its factorization.

78871763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 47.

The square root of 78871763 is about 8880.9775925852. The cubic root of 78871763 is about 428.8517462886.

The spelling of 78871763 in words is "seventy-eight million, eight hundred seventy-one thousand, seven hundred sixty-three".