78571943 has 8 divisors (see below), whose sum is σ = 83328912. Its totient is φ = 73830016.

The previous prime is 78571939. The next prime is 78571957. The reversal of 78571943 is 34917587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78571943 - 2² = 78571939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78571894 and 78571903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78571903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8096 + ... + 14922.

It is an arithmetic number, because the mean of its divisors is an integer number (10416114).

Almost surely, 2^78571943 is an apocalyptic number.

78571943 is a deficient number, since it is larger than the sum of its proper divisors (4756969).

78571943 is a wasteful number, since it uses less digits than its factorization.

78571943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521.

The product of its digits is 211680, while the sum is 44.

The square root of 78571943 is about 8864.0816219166. The cubic root of 78571943 is about 428.3076495809.

The spelling of 78571943 in words is "seventy-eight million, five hundred seventy-one thousand, nine hundred forty-three".