981365 has 16 divisors (see below), whose sum is σ = 1468800. Its totient is φ = 611520.

The previous prime is 981319. The next prime is 981373. The reversal of 981365 is 563189.

It is not a de Polignac number, because 981365 - 2⁶ = 981301 is a prime.

It is a Curzon 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 981365.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (91800).

2⁹⁸¹³⁶⁵ is an apocalyptic number.

It is an amenable number.

981365 is a deficient number, since it is larger than the sum of its proper divisors (487435).

981365 is a wasteful number, since it uses less digits than its factorization.

981365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572.

The product of its digits is 6480, while the sum is 32.

The square root of 981365 is about 990.6386828708. The cubic root of 981365 is about 99.3749344039.

The spelling of 981365 in words is "nine hundred eighty-one thousand, three hundred sixty-five".