706981 has 4 divisors (see below), whose sum is σ = 771264. Its totient is φ = 642700.

The previous prime is 706973. The next prime is 706987. The reversal of 706981 is 189607.

706981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 706981 - 2³ = 706973 is a prime.

It is a super-2 number, since 2×706981² = 999644268722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32125 + ... + 32146.

It is an arithmetic number, because the mean of its divisors is an integer number (192816).

2⁷⁰⁶⁹⁸¹ is an apocalyptic number.

It is an amenable number.

706981 is a deficient number, since it is larger than the sum of its proper divisors (64283).

706981 is a wasteful number, since it uses less digits than its factorization.

706981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64282.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 706981 is about 840.8216219865. The cubic root of 706981 is about 89.0845890220.

The spelling of 706981 in words is "seven hundred six thousand, nine hundred eighty-one".