715745 has 8 divisors (see below), whose sum is σ = 863784. Its totient is φ = 569344.

The previous prime is 715739. The next prime is 715753. The reversal of 715745 is 547517.

It can be written as a sum of positive squares in 4 ways, for example, as 113569 + 602176 = 337^2 + 776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 715745 - 2⁶ = 715681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (107973).

2⁷¹⁵⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

715745 is a deficient number, since it is larger than the sum of its proper divisors (148039).

715745 is a wasteful number, since it uses less digits than its factorization.

715745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 4900, while the sum is 29.

The square root of 715745 is about 846.0171393063. The cubic root of 715745 is about 89.4511869316.

Subtracting from 715745 its sum of digits (29), we obtain a square (715716 = 846²).

It can be divided in two parts, 7 and 15745, that multiplied together give a triangular number (110215 = T₄₆₉).

The spelling of 715745 in words is "seven hundred fifteen thousand, seven hundred forty-five".