706407640 has 32 divisors (see below), whose sum is σ = 1591954560. Its totient is φ = 282112000.

The previous prime is 706407563. The next prime is 706407643. The reversal of 706407640 is 46704607.

706407640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 706407596 and 706407605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706407643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11865 + ... + 39415.

It is an arithmetic number, because the mean of its divisors is an integer number (49748580).

Almost surely, 2^706407640 is an apocalyptic number.

It is an amenable number.

706407640 is an abundant number, since it is smaller than the sum of its proper divisors (885546920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

706407640 is a wasteful number, since it uses less digits than its factorization.

706407640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28203 (or 28199 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 706407640 is about 26578.3302711062. The cubic root of 706407640 is about 890.6050004168.

The spelling of 706407640 in words is "seven hundred six million, four hundred seven thousand, six hundred forty".