70780417 has 2 divisors, whose sum is σ = 70780418. Its totient is φ = 70780416.

The previous prime is 70780403. The next prime is 70780429. The reversal of 70780417 is 71408707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 6395841 = 8024^2 + 2529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70780417 is a prime.

It is not a weakly prime, because it can be changed into another prime (70780477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35390208 + 35390209.

It is an arithmetic number, because the mean of its divisors is an integer number (35390209).

Almost surely, 2^70780417 is an apocalyptic number.

It is an amenable number.

70780417 is a deficient number, since it is larger than the sum of its proper divisors (1).

70780417 is an equidigital number, since it uses as much as digits as its factorization.

70780417 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 70780417 is about 8413.1098293081. The cubic root of 70780417 is about 413.6544546829.

The spelling of 70780417 in words is "seventy million, seven hundred eighty thousand, four hundred seventeen".