78302863 has 2 divisors, whose sum is σ = 78302864. Its totient is φ = 78302862.

The previous prime is 78302849. The next prime is 78302891. The reversal of 78302863 is 36820387.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78302863 is a prime.

It is a super-2 number, since 2×78302863² = 12262676707993538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78302803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39151431 + 39151432.

It is an arithmetic number, because the mean of its divisors is an integer number (39151432).

Almost surely, 2^78302863 is an apocalyptic number.

78302863 is a deficient number, since it is larger than the sum of its proper divisors (1).

78302863 is an equidigital number, since it uses as much as digits as its factorization.

78302863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 78302863 is about 8848.8904954237. The cubic root of 78302863 is about 427.8181583340.

The spelling of 78302863 in words is "seventy-eight million, three hundred two thousand, eight hundred sixty-three".