78797243 has 6 divisors (see below), whose sum is σ = 91662156. Its totient is φ = 67540452.

The previous prime is 78797231. The next prime is 78797249. The reversal of 78797243 is 34279787.

It is not a de Polignac number, because 78797243 - 2⁶ = 78797179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78797249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804005 + ... + 804102.

It is an arithmetic number, because the mean of its divisors is an integer number (15277026).

Almost surely, 2^78797243 is an apocalyptic number.

78797243 is a deficient number, since it is larger than the sum of its proper divisors (12864913).

78797243 is a wasteful number, since it uses less digits than its factorization.

78797243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608121 (or 1608114 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 78797243 is about 8876.7811170491. The cubic root of 78797243 is about 428.7166404699.

The spelling of 78797243 in words is "seventy-eight million, seven hundred ninety-seven thousand, two hundred forty-three".