78334265 has 8 divisors (see below), whose sum is σ = 95775048. Its totient is φ = 61484800.

The previous prime is 78334253. The next prime is 78334273. The reversal of 78334265 is 56243387.

It can be written as a sum of positive squares in 4 ways, for example, as 22024249 + 56310016 = 4693^2 + 7504^2 .

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

It is not a de Polignac number, because 78334265 - 2¹⁴ = 78317881 is a prime.

It is a super-2 number, since 2×78334265² = 12272514146180450, which contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 147536 + ... + 148065.

It is an arithmetic number, because the mean of its divisors is an integer number (11971881).

Almost surely, 2^78334265 is an apocalyptic number.

It is an amenable number.

78334265 is a deficient number, since it is larger than the sum of its proper divisors (17440783).

78334265 is a wasteful number, since it uses less digits than its factorization.

78334265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295659.

The product of its digits is 120960, while the sum is 38.

The square root of 78334265 is about 8850.6646643063. The cubic root of 78334265 is about 427.8753403655.

The spelling of 78334265 in words is "seventy-eight million, three hundred thirty-four thousand, two hundred sixty-five".