707212081 has 2 divisors, whose sum is σ = 707212082. Its totient is φ = 707212080.

The previous prime is 707212057. The next prime is 707212097. The reversal of 707212081 is 180212707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 527115681 + 180096400 = 22959^2 + 13420^2 .

It is an emirp because it is prime and its reverse (180212707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 707212081 - 2¹¹ = 707210033 is a prime.

It is a super-2 number, since 2×707212081² = 1000297855024701122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (707212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353606040 + 353606041.

It is an arithmetic number, because the mean of its divisors is an integer number (353606041).

Almost surely, 2^707212081 is an apocalyptic number.

It is an amenable number.

707212081 is a deficient number, since it is larger than the sum of its proper divisors (1).

707212081 is an equidigital number, since it uses as much as digits as its factorization.

707212081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 707212081 is about 26593.4593650394. The cubic root of 707212081 is about 890.9429390958.

Adding to 707212081 its reverse (180212707), we get a palindrome (887424788).

The spelling of 707212081 in words is "seven hundred seven million, two hundred twelve thousand, eighty-one".