78422063 has 4 divisors (see below), whose sum is σ = 82549560. Its totient is φ = 74294568.

The previous prime is 78422059. The next prime is 78422077. The reversal of 78422063 is 36022487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36022487 = 1439 ⋅25033.

It is a cyclic number.

It is not a de Polignac number, because 78422063 - 2² = 78422059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78422363) 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, 2063720 + ... + 2063757.

It is an arithmetic number, because the mean of its divisors is an integer number (20637390).

Almost surely, 2^78422063 is an apocalyptic number.

78422063 is a deficient number, since it is larger than the sum of its proper divisors (4127497).

78422063 is a wasteful number, since it uses less digits than its factorization.

78422063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127496.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 78422063 is about 8855.6232417600. The cubic root of 78422063 is about 428.0351366472.

The spelling of 78422063 in words is "seventy-eight million, four hundred twenty-two thousand, sixty-three".