708981 has 32 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 366912.

The previous prime is 708979. The next prime is 708989. The reversal of 708981 is 189807.

It is not a de Polignac number, because 708981 - 2¹ = 708979 is a prime.

It is a super-2 number, since 2×708981² = 1005308116722, which contains 22 as substring.

708981 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 708981.

It is not an unprimeable number, because it can be changed into a prime (708989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13351 + ... + 13403.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁷⁰⁸⁹⁸¹ is an apocalyptic number.

It is an amenable number.

708981 is a deficient number, since it is larger than the sum of its proper divisors (500619).

708981 is a wasteful number, since it uses less digits than its factorization.

708981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 708981 is about 842.0100949514. The cubic root of 708981 is about 89.1685146306.

The spelling of 708981 in words is "seven hundred eight thousand, nine hundred eighty-one".