78868330 has 8 divisors (see below), whose sum is σ = 141963012. Its totient is φ = 31547328.

The previous prime is 78868289. The next prime is 78868331. The reversal of 78868330 is 3386887.

It can be written as a sum of positive squares in 2 ways, for example, as 66569281 + 12299049 = 8159^2 + 3507^2 .

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

It is not an unprimeable number, because it can be changed into a prime (78868331) 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, 3943407 + ... + 3943426.

Almost surely, 2^78868330 is an apocalyptic number.

78868330 is a deficient number, since it is larger than the sum of its proper divisors (63094682).

78868330 is a wasteful number, since it uses less digits than its factorization.

78868330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886840.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 78868330 is about 8880.7843122103. The cubic root of 78868330 is about 428.8455240811.

The spelling of 78868330 in words is "seventy-eight million, eight hundred sixty-eight thousand, three hundred thirty".