491700 has 72 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 118400.

The previous prime is 491677. The next prime is 491707. The reversal of 491700 is 7194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3226 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (21700).

2⁴⁹¹⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781200).

491700 is an abundant number, since it is smaller than the sum of its proper divisors (1070700).

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

491700 is a wasteful number, since it uses less digits than its factorization.

491700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 491700 is about 701.2132343303. The cubic root of 491700 is about 78.9284188437.

Adding to 491700 its reverse (7194), we get a palindrome (498894).

The spelling of 491700 in words is "four hundred ninety-one thousand, seven hundred".