718945 has 8 divisors (see below), whose sum is σ = 879336. Its totient is φ = 564096.

The previous prime is 718943. The next prime is 718973. The reversal of 718945 is 549817.

It is a happy number.

718945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 349281 + 369664 = 591^2 + 608^2 .

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 718945 - 2¹ = 718943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 718945.

It is not an unprimeable number, because it can be changed into a prime (718943) 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, 1092 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (109917).

2⁷¹⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

718945 is a deficient number, since it is larger than the sum of its proper divisors (160391).

718945 is a wasteful number, since it uses less digits than its factorization.

718945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its digits is 10080, while the sum is 34.

The square root of 718945 is about 847.9062448172. The cubic root of 718945 is about 89.5842968468.

The spelling of 718945 in words is "seven hundred eighteen thousand, nine hundred forty-five".