78286065 has 32 divisors (see below), whose sum is σ = 147159936. Its totient is φ = 35036160.

The previous prime is 78286063. The next prime is 78286069. The reversal of 78286065 is 56068287.

It is not a de Polignac number, because 78286065 - 2¹ = 78286063 is a prime.

It is a super-2 number, since 2×78286065² = 12257415946368450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78286063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16104 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (4598748).

Almost surely, 2^78286065 is an apocalyptic number.

It is an amenable number.

78286065 is a deficient number, since it is larger than the sum of its proper divisors (68873871).

78286065 is a wasteful number, since it uses less digits than its factorization.

78286065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36529.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 78286065 is about 8847.9412859716. The cubic root of 78286065 is about 427.7875634400.

The spelling of 78286065 in words is "seventy-eight million, two hundred eighty-six thousand, sixty-five".