78070871 has 6 divisors (see below), whose sum is σ = 80856672. Its totient is φ = 75377960.

The previous prime is 78070859. The next prime is 78070873. The reversal of 78070871 is 17807087.

It is not a de Polignac number, because 78070871 - 2¹⁸ = 77808727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78070873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45575 + ... + 47256.

It is an arithmetic number, because the mean of its divisors is an integer number (13476112).

Almost surely, 2^78070871 is an apocalyptic number.

78070871 is a deficient number, since it is larger than the sum of its proper divisors (2785801).

78070871 is an equidigital number, since it uses as much as digits as its factorization.

78070871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92889 (or 92860 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 78070871 is about 8835.7722356340. The cubic root of 78070871 is about 427.3952339515.

The spelling of 78070871 in words is "seventy-eight million, seventy thousand, eight hundred seventy-one".