706665616 has 40 divisors (see below), whose sum is σ = 1450067904. Its totient is φ = 332914560.

The previous prime is 706665601. The next prime is 706665637. The reversal of 706665616 is 616566607.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 10326 + ... + 38986.

Almost surely, 2^706665616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 706665616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725033952).

706665616 is an abundant number, since it is smaller than the sum of its proper divisors (743402288).

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

706665616 is a wasteful number, since it uses less digits than its factorization.

706665616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28759 (or 28753 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 706665616 is about 26583.1829546426. The cubic root of 706665616 is about 890.7134018269.

Subtracting from 706665616 its reverse (616566607), we obtain a palindrome (90099009).

It can be divided in two parts, 706665 and 616, that added together give a 4-th power (707281 = 29⁴).

The spelling of 706665616 in words is "seven hundred six million, six hundred sixty-five thousand, six hundred sixteen".