78363353 has 18 divisors (see below), whose sum is σ = 88351614. Its totient is φ = 69253632.

The previous prime is 78363349. The next prime is 78363359. The reversal of 78363353 is 35336387.

It can be written as a sum of positive squares in 3 ways, for example, as 976144 + 77387209 = 988^2 + 8797^2 .

It is not a de Polignac number, because 78363353 - 2² = 78363349 is a prime.

It is a super-2 number, since 2×78363353² = 12281630186805218, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78363359) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 693425 + ... + 693537.

It is an arithmetic number, because the mean of its divisors is an integer number (4908423).

Almost surely, 2^78363353 is an apocalyptic number.

It is an amenable number.

78363353 is a deficient number, since it is larger than the sum of its proper divisors (9988261).

78363353 is a wasteful number, since it uses less digits than its factorization.

78363353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 149 counting only the distinct ones).

The product of its digits is 136080, while the sum is 38.

The square root of 78363353 is about 8852.3077782011. The cubic root of 78363353 is about 427.9282950450.

The spelling of 78363353 in words is "seventy-eight million, three hundred sixty-three thousand, three hundred fifty-three".