78563323 has 4 divisors (see below), whose sum is σ = 78777760. Its totient is φ = 78348888.

The previous prime is 78563311. The next prime is 78563351. The reversal of 78563323 is 32336587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78563323 - 2⁹ = 78562811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78563383) 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, 106668 + ... + 107401.

It is an arithmetic number, because the mean of its divisors is an integer number (19694440).

Almost surely, 2^78563323 is an apocalyptic number.

78563323 is a deficient number, since it is larger than the sum of its proper divisors (214437).

78563323 is a wasteful number, since it uses less digits than its factorization.

78563323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214436.

The product of its digits is 90720, while the sum is 37.

The square root of 78563323 is about 8863.5953765952. The cubic root of 78563323 is about 428.2919860297.

The spelling of 78563323 in words is "seventy-eight million, five hundred sixty-three thousand, three hundred twenty-three".