706657 has 8 divisors (see below), whose sum is σ = 814016. Its totient is φ = 600912.

The previous prime is 706633. The next prime is 706661. The reversal of 706657 is 756607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-706657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (706157) 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, 778 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (101752).

2⁷⁰⁶⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

706657 is a deficient number, since it is larger than the sum of its proper divisors (107359).

706657 is a wasteful number, since it uses less digits than its factorization.

706657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 706657 is about 840.6289312176. The cubic root of 706657 is about 89.0709781813.

The spelling of 706657 in words is "seven hundred six thousand, six hundred fifty-seven".