8400070706 has 16 divisors (see below), whose sum is σ = 13015470744. Its totient is φ = 4062893184.

The previous prime is 8400070673. The next prime is 8400070729. The reversal of 8400070706 is 6070700048.

It can be written as a sum of positive squares in 4 ways, for example, as 8269174225 + 130896481 = 90935^2 + 11441^2 .

It is a super-2 number, since 2×8400070706² (a number of 21 digits) contains 22 as substring.

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, 315275 + ... + 340878.

Almost surely, 2^8400070706 is an apocalyptic number.

8400070706 is a deficient number, since it is larger than the sum of its proper divisors (4615400038).

8400070706 is a wasteful number, since it uses less digits than its factorization.

8400070706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656365.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 8400070706 is about 91651.8996311588. The cubic root of 8400070706 is about 2032.7984172106.

The spelling of 8400070706 in words is "eight billion, four hundred million, seventy thousand, seven hundred six".