706257261 has 12 divisors (see below), whose sum is σ = 1034124988. Its totient is φ = 464387904.

The previous prime is 706257259. The next prime is 706257289. The reversal of 706257261 is 162752607.

706257261 is a `hidden beast` number, since 7 + 0 + 625 + 7 + 26 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 143856036 + 562401225 = 11994^2 + 23715^2 .

It is not a de Polignac number, because 706257261 - 2¹ = 706257259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706257161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536830 + ... + 538143.

Almost surely, 2^706257261 is an apocalyptic number.

It is an amenable number.

706257261 is a deficient number, since it is larger than the sum of its proper divisors (327867727).

706257261 is a wasteful number, since it uses less digits than its factorization.

706257261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075052 (or 1075049 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 706257261 is about 26575.5011429700. The cubic root of 706257261 is about 890.5417990458.

The spelling of 706257261 in words is "seven hundred six million, two hundred fifty-seven thousand, two hundred sixty-one".