981677 has 4 divisors (see below), whose sum is σ = 1013376. Its totient is φ = 949980.

The previous prime is 981653. The next prime is 981683. The reversal of 981677 is 776189.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 776189 = 109 ⋅7121.

It is a cyclic number.

It is not a de Polignac number, because 981677 - 2¹⁶ = 916141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981677.

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 981677.

It is not an unprimeable number, because it can be changed into a prime (981637) 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, 15803 + ... + 15864.

It is an arithmetic number, because the mean of its divisors is an integer number (253344).

2⁹⁸¹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

981677 is a deficient number, since it is larger than the sum of its proper divisors (31699).

981677 is a wasteful number, since it uses less digits than its factorization.

981677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31698.

The product of its digits is 21168, while the sum is 38.

The square root of 981677 is about 990.7961445222. The cubic root of 981677 is about 99.3854645310.

The spelling of 981677 in words is "nine hundred eighty-one thousand, six hundred seventy-seven".