78067723 has 4 divisors (see below), whose sum is σ = 82659960. Its totient is φ = 73475488.

The previous prime is 78067697. The next prime is 78067763. The reversal of 78067723 is 32776087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78067723 - 2⁹ = 78067211 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78067763) 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, 2296093 + ... + 2296126.

It is an arithmetic number, because the mean of its divisors is an integer number (20664990).

Almost surely, 2^78067723 is an apocalyptic number.

78067723 is a deficient number, since it is larger than the sum of its proper divisors (4592237).

78067723 is a wasteful number, since it uses less digits than its factorization.

78067723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592236.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 78067723 is about 8835.5940943436. The cubic root of 78067723 is about 427.3894893493.

The spelling of 78067723 in words is "seventy-eight million, sixty-seven thousand, seven hundred twenty-three".