981097 has 8 divisors (see below), whose sum is σ = 1065344. Its totient is φ = 898128.

The previous prime is 981091. The next prime is 981133. The reversal of 981097 is 790189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 981097 - 2¹⁹ = 456809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1888 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (133168).

2⁹⁸¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

981097 is a deficient number, since it is larger than the sum of its proper divisors (84247).

981097 is a wasteful number, since it uses less digits than its factorization.

981097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 981097 is about 990.5034073642. The cubic root of 981097 is about 99.3658875127.

The spelling of 981097 in words is "nine hundred eighty-one thousand, ninety-seven".