706140640 has 24 divisors (see below), whose sum is σ = 1668257640. Its totient is φ = 282456192.

The previous prime is 706140637. The next prime is 706140667. The reversal of 706140640 is 46041607.

It is a junction number, because it is equal to n+sod(n) for n = 706140599 and 706140608.

It is a congruent number.

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, 2206530 + ... + 2206849.

It is an arithmetic number, because the mean of its divisors is an integer number (69510735).

Almost surely, 2^706140640 is an apocalyptic number.

It is an amenable number.

706140640 is an abundant number, since it is smaller than the sum of its proper divisors (962117000).

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

706140640 is a wasteful number, since it uses less digits than its factorization.

706140640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413394 (or 4413386 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 706140640 is about 26573.3069074965. The cubic root of 706140640 is about 890.4927793293.

The spelling of 706140640 in words is "seven hundred six million, one hundred forty thousand, six hundred forty".