78066366 has 32 divisors (see below), whose sum is σ = 179589120. Its totient is φ = 22160736.

The previous prime is 78066343. The next prime is 78066367. The reversal of 78066366 is 66366087.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78066367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675 + ... + 12513.

It is an arithmetic number, because the mean of its divisors is an integer number (5612160).

Almost surely, 2^78066366 is an apocalyptic number.

78066366 is an abundant number, since it is smaller than the sum of its proper divisors (101522754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78066366 is a wasteful number, since it uses less digits than its factorization.

78066366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12008.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 78066366 is about 8835.5173023429. The cubic root of 78066366 is about 427.3870129913.

The spelling of 78066366 in words is "seventy-eight million, sixty-six thousand, three hundred sixty-six".