78106733 has 2 divisors, whose sum is σ = 78106734. Its totient is φ = 78106732.

The previous prime is 78106727. The next prime is 78106751. The reversal of 78106733 is 33760187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71537764 + 6568969 = 8458^2 + 2563^2 .

It is a cyclic number.

It is not a de Polignac number, because 78106733 - 2⁸ = 78106477 is a prime.

It is a super-2 number, since 2×78106733² = 12201323479866578, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78106693 and 78106702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78106703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39053366 + 39053367.

It is an arithmetic number, because the mean of its divisors is an integer number (39053367).

Almost surely, 2^78106733 is an apocalyptic number.

It is an amenable number.

78106733 is a deficient number, since it is larger than the sum of its proper divisors (1).

78106733 is an equidigital number, since it uses as much as digits as its factorization.

78106733 is an evil number, because the sum of its binary digits is even.

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

The square root of 78106733 is about 8837.8013668559. The cubic root of 78106733 is about 427.4606655327.

The spelling of 78106733 in words is "seventy-eight million, one hundred six thousand, seven hundred thirty-three".