78063137 has 2 divisors, whose sum is σ = 78063138. Its totient is φ = 78063136.

The previous prime is 78063131. The next prime is 78063149. The reversal of 78063137 is 73136087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77281681 + 781456 = 8791^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 78063137 - 2⁴ = 78063121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78063097 and 78063106.

It is not a weakly prime, because it can be changed into another prime (78063131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39031568 + 39031569.

It is an arithmetic number, because the mean of its divisors is an integer number (39031569).

Almost surely, 2^78063137 is an apocalyptic number.

It is an amenable number.

78063137 is a deficient number, since it is larger than the sum of its proper divisors (1).

78063137 is an equidigital number, since it uses as much as digits as its factorization.

78063137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 78063137 is about 8835.3345720465. The cubic root of 78063137 is about 427.3811203482.

The spelling of 78063137 in words is "seventy-eight million, sixty-three thousand, one hundred thirty-seven".