715540 has 48 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 231552.

The previous prime is 715537. The next prime is 715549. The reversal of 715540 is 45517.

715540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2526 + ... + 2794.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁷¹⁵⁵⁴⁰ is an apocalyptic number.

715540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 715540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907200).

715540 is an abundant number, since it is smaller than the sum of its proper divisors (1098860).

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

715540 is a wasteful number, since it uses less digits than its factorization.

715540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 715540 is about 845.8959746919. The cubic root of 715540 is about 89.4426460666.

The spelling of 715540 in words is "seven hundred fifteen thousand, five hundred forty".