706388945 has 4 divisors (see below), whose sum is σ = 847666740. Its totient is φ = 565111152.

The previous prime is 706388927. The next prime is 706388957. The reversal of 706388945 is 549883607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99062209 + 607326736 = 9953^2 + 24644^2 .

It is a cyclic number.

It is not a de Polignac number, because 706388945 - 2²⁰ = 705340369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 706388893 and 706388902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70638890 + ... + 70638899.

It is an arithmetic number, because the mean of its divisors is an integer number (211916685).

Almost surely, 2^706388945 is an apocalyptic number.

It is an amenable number.

706388945 is a deficient number, since it is larger than the sum of its proper divisors (141277795).

706388945 is a wasteful number, since it uses less digits than its factorization.

706388945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141277794.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 706388945 is about 26577.9785724949. The cubic root of 706388945 is about 890.5971437599.

The spelling of 706388945 in words is "seven hundred six million, three hundred eighty-eight thousand, nine hundred forty-five".