981700 has 18 divisors (see below), whose sum is σ = 2130506. Its totient is φ = 392640.

The previous prime is 981697. The next prime is 981703. The reversal of 981700 is 7189.

It is an interprime number because it is at equal distance from previous prime (981697) and next prime (981703).

It can be written as a sum of positive squares in 3 ways, for example, as 315844 + 665856 = 562^2 + 816^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (981703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4809 + ... + 5008.

2⁹⁸¹⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

981700 is an abundant number, since it is smaller than the sum of its proper divisors (1148806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981700 is a wasteful number, since it uses less digits than its factorization.

981700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831 (or 9824 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 981700 is about 990.8077512818. The cubic root of 981700 is about 99.3862407020.

Adding to 981700 its reverse (7189), we get a palindrome (988889).

It can be divided in two parts, 981 and 700, that added together give a square (1681 = 41²).

The spelling of 981700 in words is "nine hundred eighty-one thousand, seven hundred".