78864346 has 8 divisors (see below), whose sum is σ = 129050784. Its totient is φ = 35847420.

The previous prime is 78864337. The next prime is 78864347. The reversal of 78864346 is 64346887.

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

It is a junction number, because it is equal to n+sod(n) for n = 78864296 and 78864305.

It is not an unprimeable number, because it can be changed into a prime (78864347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792350 + ... + 1792393.

It is an arithmetic number, because the mean of its divisors is an integer number (16131348).

Almost surely, 2^78864346 is an apocalyptic number.

78864346 is a deficient number, since it is larger than the sum of its proper divisors (50186438).

78864346 is a wasteful number, since it uses less digits than its factorization.

78864346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584756.

The product of its digits is 774144, while the sum is 46.

The square root of 78864346 is about 8880.5600048646. The cubic root of 78864346 is about 428.8383029767.

The spelling of 78864346 in words is "seventy-eight million, eight hundred sixty-four thousand, three hundred forty-six".