70778041 has 2 divisors, whose sum is σ = 70778042. Its totient is φ = 70778040.

The previous prime is 70778033. The next prime is 70778047. The reversal of 70778041 is 14087707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61168041 + 9610000 = 7821^2 + 3100^2 .

It is a cyclic number.

It is not a de Polignac number, because 70778041 - 2³ = 70778033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70777988 and 70778006.

It is not a weakly prime, because it can be changed into another prime (70778047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35389020 + 35389021.

It is an arithmetic number, because the mean of its divisors is an integer number (35389021).

Almost surely, 2^70778041 is an apocalyptic number.

It is an amenable number.

70778041 is a deficient number, since it is larger than the sum of its proper divisors (1).

70778041 is an equidigital number, since it uses as much as digits as its factorization.

70778041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 70778041 is about 8412.9686199343. The cubic root of 70778041 is about 413.6498260299.

The spelling of 70778041 in words is "seventy million, seven hundred seventy-eight thousand, forty-one".