78020678 has 8 divisors (see below), whose sum is σ = 117885672. Its totient is φ = 38725456.

The previous prime is 78020659. The next prime is 78020681. The reversal of 78020678 is 87602087.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142100 + ... + 142647.

It is an arithmetic number, because the mean of its divisors is an integer number (14735709).

Almost surely, 2^78020678 is an apocalyptic number.

78020678 is a deficient number, since it is larger than the sum of its proper divisors (39864994).

78020678 is a wasteful number, since it uses less digits than its factorization.

78020678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284886.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 78020678 is about 8832.9314499774. The cubic root of 78020678 is about 427.3036212596.

The spelling of 78020678 in words is "seventy-eight million, twenty thousand, six hundred seventy-eight".