706978 has 4 divisors (see below), whose sum is σ = 1060470. Its totient is φ = 353488.

The previous prime is 706973. The next prime is 706987. The reversal of 706978 is 879607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 418609 + 288369 = 647^2 + 537^2 .

It is not an unprimeable number, because it can be changed into a prime (706973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176743 + ... + 176746.

2⁷⁰⁶⁹⁷⁸ is an apocalyptic number.

706978 is a deficient number, since it is larger than the sum of its proper divisors (353492).

706978 is a wasteful number, since it uses less digits than its factorization.

706978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353491.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 706978 is about 840.8198380153. The cubic root of 706978 is about 89.0844630147.

The spelling of 706978 in words is "seven hundred six thousand, nine hundred seventy-eight".