78798193 has 4 divisors (see below), whose sum is σ = 79563328. Its totient is φ = 78033060.

The previous prime is 78798173. The next prime is 78798257. The reversal of 78798193 is 39189787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78798193 - 2²¹ = 76701041 is a prime.

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 78798193.

It is not an unprimeable number, because it can be changed into a prime (78798103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382413 + ... + 382618.

It is an arithmetic number, because the mean of its divisors is an integer number (19890832).

Almost surely, 2^78798193 is an apocalyptic number.

It is an amenable number.

78798193 is a deficient number, since it is larger than the sum of its proper divisors (765135).

78798193 is a wasteful number, since it uses less digits than its factorization.

78798193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765134.

The product of its digits is 762048, while the sum is 52.

The square root of 78798193 is about 8876.8346272756. The cubic root of 78798193 is about 428.7183633693.

The spelling of 78798193 in words is "seventy-eight million, seven hundred ninety-eight thousand, one hundred ninety-three".