78326166 has 8 divisors (see below), whose sum is σ = 156652344. Its totient is φ = 26108720.

The previous prime is 78326159. The next prime is 78326179. The reversal of 78326166 is 66162387.

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

78326166 is an admirable number.

It is a super-2 number, since 2×78326166² = 12269976560519112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6527175 + ... + 6527186.

It is an arithmetic number, because the mean of its divisors is an integer number (19581543).

Almost surely, 2^78326166 is an apocalyptic number.

78326166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78326166 is a wasteful number, since it uses less digits than its factorization.

78326166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13054366.

The product of its digits is 72576, while the sum is 39.

The square root of 78326166 is about 8850.2071162205. The cubic root of 78326166 is about 427.8605938098.

The spelling of 78326166 in words is "seventy-eight million, three hundred twenty-six thousand, one hundred sixty-six".