78324755 has 8 divisors (see below), whose sum is σ = 97021824. Its totient is φ = 60638400.

The previous prime is 78324739. The next prime is 78324823. The reversal of 78324755 is 55742387.

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

It is not a de Polignac number, because 78324755 - 2⁴ = 78324739 is a prime.

It is a super-2 number, since 2×78324755² = 12269534491620050, 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252506 + ... + 252815.

It is an arithmetic number, because the mean of its divisors is an integer number (12127728).

Almost surely, 2^78324755 is an apocalyptic number.

78324755 is a deficient number, since it is larger than the sum of its proper divisors (18697069).

78324755 is a wasteful number, since it uses less digits than its factorization.

78324755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505357.

The product of its digits is 235200, while the sum is 41.

The square root of 78324755 is about 8850.1274002129. The cubic root of 78324755 is about 427.8580245750.

The spelling of 78324755 in words is "seventy-eight million, three hundred twenty-four thousand, seven hundred fifty-five".