981608 has 8 divisors (see below), whose sum is σ = 1840530. Its totient is φ = 490800.

The previous prime is 981601. The next prime is 981623. The reversal of 981608 is 806189.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 407044 = 758^2 + 638^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (981601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61343 + ... + 61358.

2⁹⁸¹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

981608 is a deficient number, since it is larger than the sum of its proper divisors (858922).

981608 is a wasteful number, since it uses less digits than its factorization.

981608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122707 (or 122703 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 981608 is about 990.7613234276. The cubic root of 981608 is about 99.3831359450.

The spelling of 981608 in words is "nine hundred eighty-one thousand, six hundred eight".