78077243 has 8 divisors (see below), whose sum is σ = 84687120. Its totient is φ = 71691520.

The previous prime is 78077227. The next prime is 78077257. The reversal of 78077243 is 34277087.

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

It is a cyclic number.

It is not a de Polignac number, because 78077243 - 2⁴ = 78077227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78077197 and 78077206.

It is not an unprimeable number, because it can be changed into a prime (78077443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55313 + ... + 56706.

It is an arithmetic number, because the mean of its divisors is an integer number (10585890).

Almost surely, 2^78077243 is an apocalyptic number.

78077243 is a deficient number, since it is larger than the sum of its proper divisors (6609877).

78077243 is a wasteful number, since it uses less digits than its factorization.

78077243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112077.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 78077243 is about 8836.1328079653. The cubic root of 78077243 is about 427.4068613711.

The spelling of 78077243 in words is "seventy-eight million, seventy-seven thousand, two hundred forty-three".