705645445 has 8 divisors (see below), whose sum is σ = 862751736. Its totient is φ = 553864896.

The previous prime is 705645439. The next prime is 705645461. The reversal of 705645445 is 544546507.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 105493441 + 600152004 = 10271^2 + 24498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 705645445 - 2²⁹ = 168774533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 705645398 and 705645407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1331142 + ... + 1331671.

It is an arithmetic number, because the mean of its divisors is an integer number (107843967).

Almost surely, 2^705645445 is an apocalyptic number.

It is an amenable number.

705645445 is a deficient number, since it is larger than the sum of its proper divisors (157106291).

705645445 is a wasteful number, since it uses less digits than its factorization.

705645445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662871.

The product of its (nonzero) digits is 336000, while the sum is 40.

The square root of 705645445 is about 26563.9877465715. The cubic root of 705645445 is about 890.2845721318.

The spelling of 705645445 in words is "seven hundred five million, six hundred forty-five thousand, four hundred forty-five".