78413671 has 6 divisors (see below), whose sum is σ = 91215960. Its totient is φ = 67211676.

The previous prime is 78413641. The next prime is 78413677. The reversal of 78413671 is 17631487.

It is not a de Polignac number, because 78413671 - 2²⁵ = 44859239 is a prime.

It is a super-2 number, since 2×78413671² = 12297407599392482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78413671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78413677) 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 in 5 ways as a sum of consecutive naturals, for example, 800091 + ... + 800188.

It is an arithmetic number, because the mean of its divisors is an integer number (15202660).

Almost surely, 2^78413671 is an apocalyptic number.

78413671 is a deficient number, since it is larger than the sum of its proper divisors (12802289).

78413671 is a wasteful number, since it uses less digits than its factorization.

78413671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600293 (or 1600286 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 78413671 is about 8855.1494058542. The cubic root of 78413671 is about 428.0198679891.

The spelling of 78413671 in words is "seventy-eight million, four hundred thirteen thousand, six hundred seventy-one".