78227623 has 8 divisors (see below), whose sum is σ = 81754848. Its totient is φ = 74710944.

The previous prime is 78227609. The next prime is 78227627. The reversal of 78227623 is 32672287.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78227623 is a prime.

It is a super-3 number, since 3×78227623³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78227627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15165 + ... + 19657.

It is an arithmetic number, because the mean of its divisors is an integer number (10219356).

Almost surely, 2^78227623 is an apocalyptic number.

78227623 is a deficient number, since it is larger than the sum of its proper divisors (3527225).

78227623 is a wasteful number, since it uses less digits than its factorization.

78227623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273.

The product of its digits is 56448, while the sum is 37.

The square root of 78227623 is about 8844.6380932178. The cubic root of 78227623 is about 427.6810864889.

The spelling of 78227623 in words is "seventy-eight million, two hundred twenty-seven thousand, six hundred twenty-three".