78331063 has 2 divisors, whose sum is σ = 78331064. Its totient is φ = 78331062.

The previous prime is 78331051. The next prime is 78331073. The reversal of 78331063 is 36013387.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78331063 is a prime.

It is a super-2 number, since 2×78331063² = 12271510861419938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78331013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39165531 + 39165532.

It is an arithmetic number, because the mean of its divisors is an integer number (39165532).

Almost surely, 2^78331063 is an apocalyptic number.

78331063 is a deficient number, since it is larger than the sum of its proper divisors (1).

78331063 is an equidigital number, since it uses as much as digits as its factorization.

78331063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 78331063 is about 8850.4837720884. The cubic root of 78331063 is about 427.8695103263.

The spelling of 78331063 in words is "seventy-eight million, three hundred thirty-one thousand, sixty-three".