78545066 has 16 divisors (see below), whose sum is σ = 125582400. Its totient is φ = 36715200.

The previous prime is 78545063. The next prime is 78545087. The reversal of 78545066 is 66054587.

It is not an unprimeable number, because it can be changed into a prime (78545063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516 + ... + 12783.

It is an arithmetic number, because the mean of its divisors is an integer number (7848900).

Almost surely, 2^78545066 is an apocalyptic number.

78545066 is a deficient number, since it is larger than the sum of its proper divisors (47037334).

78545066 is a wasteful number, since it uses less digits than its factorization.

78545066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15469.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 78545066 is about 8862.5654299418. The cubic root of 78545066 is about 428.2588071354.

The spelling of 78545066 in words is "seventy-eight million, five hundred forty-five thousand, sixty-six".