78797543 has 16 divisors (see below), whose sum is σ = 89434752. Its totient is φ = 68796000.

The previous prime is 78797539. The next prime is 78797549. The reversal of 78797543 is 34579787.

It is a cyclic number.

It is not a de Polignac number, because 78797543 - 2² = 78797539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78797491 and 78797500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78797549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27488 + ... + 30218.

It is an arithmetic number, because the mean of its divisors is an integer number (5589672).

Almost surely, 2^78797543 is an apocalyptic number.

78797543 is a deficient number, since it is larger than the sum of its proper divisors (10637209).

78797543 is a wasteful number, since it uses less digits than its factorization.

78797543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846.

The product of its digits is 1481760, while the sum is 50.

The square root of 78797543 is about 8876.7980150502. The cubic root of 78797543 is about 428.7171845449.

The spelling of 78797543 in words is "seventy-eight million, seven hundred ninety-seven thousand, five hundred forty-three".