718540 has 24 divisors (see below), whose sum is σ = 1551312. Its totient is φ = 279360.

The previous prime is 718513. The next prime is 718541. The reversal of 718540 is 45817.

It is not an unprimeable number, because it can be changed into a prime (718541) 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, 255 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (64638).

2⁷¹⁸⁵⁴⁰ 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 718540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775656).

718540 is an abundant number, since it is smaller than the sum of its proper divisors (832772).

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

718540 is a wasteful number, since it uses less digits than its factorization.

718540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 718540 is about 847.6673875996. The cubic root of 718540 is about 89.5674719830.

It can be divided in two parts, 7185 and 40, that added together give a square (7225 = 85²).

The spelling of 718540 in words is "seven hundred eighteen thousand, five hundred forty".