78606065 has 16 divisors (see below), whose sum is σ = 99042048. Its totient is φ = 59775936.

The previous prime is 78606053. The next prime is 78606067. The reversal of 78606065 is 56060687.

It is a cyclic number.

It is not a de Polignac number, because 78606065 - 2⁸ = 78605809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78606067) 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 15 ways as a sum of consecutive naturals, for example, 17159 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (6190128).

Almost surely, 2^78606065 is an apocalyptic number.

It is an amenable number.

78606065 is a deficient number, since it is larger than the sum of its proper divisors (20435983).

78606065 is a wasteful number, since it uses less digits than its factorization.

78606065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 78606065 is about 8866.0061470766. The cubic root of 78606065 is about 428.3696420173.

The spelling of 78606065 in words is "seventy-eight million, six hundred six thousand, sixty-five".