78505366 has 8 divisors (see below), whose sum is σ = 118286784. Its totient is φ = 39076440.

The previous prime is 78505363. The next prime is 78505391. The reversal of 78505366 is 66350587.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78505363) 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, 87565 + ... + 88456.

It is an arithmetic number, because the mean of its divisors is an integer number (14785848).

Almost surely, 2^78505366 is an apocalyptic number.

78505366 is a deficient number, since it is larger than the sum of its proper divisors (39781418).

78505366 is a wasteful number, since it uses less digits than its factorization.

78505366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176246.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 78505366 is about 8860.3253890588. The cubic root of 78505366 is about 428.1866416012.

The spelling of 78505366 in words is "seventy-eight million, five hundred five thousand, three hundred sixty-six".