706720781461 has 2 divisors, whose sum is σ = 706720781462. Its totient is φ = 706720781460.

The previous prime is 706720781447. The next prime is 706720781527. The reversal of 706720781461 is 164187027607.

706720781461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513379415025 + 193341366436 = 716505^2 + 439706^2 .

It is a cyclic number.

It is not a de Polignac number, because 706720781461 - 2²⁷ = 706586563733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706720784461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353360390730 + 353360390731.

It is an arithmetic number, because the mean of its divisors is an integer number (353360390731).

Almost surely, 2^706720781461 is an apocalyptic number.

It is an amenable number.

706720781461 is a deficient number, since it is larger than the sum of its proper divisors (1).

706720781461 is an equidigital number, since it uses as much as digits as its factorization.

706720781461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 706720781461 in words is "seven hundred six billion, seven hundred twenty million, seven hundred eighty-one thousand, four hundred sixty-one".