981727 has 4 divisors (see below), whose sum is σ = 985480. Its totient is φ = 977976.

The previous prime is 981713. The next prime is 981731. The reversal of 981727 is 727189.

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

It is a cyclic number.

It is not a de Polignac number, because 981727 - 2⁷ = 981599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 981692 and 981701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981707) 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, 1452 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (246370).

2⁹⁸¹⁷²⁷ is an apocalyptic number.

981727 is a deficient number, since it is larger than the sum of its proper divisors (3753).

981727 is a wasteful number, since it uses less digits than its factorization.

981727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its digits is 7056, while the sum is 34.

The square root of 981727 is about 990.8213764347. The cubic root of 981727 is about 99.3871518439.

The spelling of 981727 in words is "nine hundred eighty-one thousand, seven hundred twenty-seven".