981207 has 8 divisors (see below), whose sum is σ = 1453680. Its totient is φ = 654120.

The previous prime is 981199. The next prime is 981209. The reversal of 981207 is 702189.

It is not a de Polignac number, because 981207 - 2³ = 981199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 36341 = 981207 / (9 + 8 + 1 + 2 + 0 + 7).

It is an Ulam 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 981207.

It is not an unprimeable number, because it can be changed into a prime (981209) 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, 18144 + ... + 18197.

It is an arithmetic number, because the mean of its divisors is an integer number (181710).

2⁹⁸¹²⁰⁷ is an apocalyptic number.

981207 is a deficient number, since it is larger than the sum of its proper divisors (472473).

981207 is a wasteful number, since it uses less digits than its factorization.

981207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36350 (or 36344 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 981207 is about 990.5589331282. The cubic root of 981207 is about 99.3696009883.

The spelling of 981207 in words is "nine hundred eighty-one thousand, two hundred seven".