78086263 has 4 divisors (see below), whose sum is σ = 79990848. Its totient is φ = 76181680.

The previous prime is 78086251. The next prime is 78086273. The reversal of 78086263 is 36268087.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36268087 = 3301 ⋅10987.

It is a cyclic number.

It is not a de Polignac number, because 78086263 - 2⁹ = 78085751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78086213) 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 3 ways as a sum of consecutive naturals, for example, 952231 + ... + 952312.

It is an arithmetic number, because the mean of its divisors is an integer number (19997712).

Almost surely, 2^78086263 is an apocalyptic number.

78086263 is a deficient number, since it is larger than the sum of its proper divisors (1904585).

78086263 is a wasteful number, since it uses less digits than its factorization.

78086263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904584.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 78086263 is about 8836.6431975044. The cubic root of 78086263 is about 427.4233196941.

The spelling of 78086263 in words is "seventy-eight million, eighty-six thousand, two hundred sixty-three".