711643 has 4 divisors (see below), whose sum is σ = 742608. Its totient is φ = 680680.

The previous prime is 711629. The next prime is 711649. The reversal of 711643 is 346117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 711643 - 2⁹ = 711131 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15448 + ... + 15493.

It is an arithmetic number, because the mean of its divisors is an integer number (185652).

2⁷¹¹⁶⁴³ is an apocalyptic number.

711643 is a deficient number, since it is larger than the sum of its proper divisors (30965).

711643 is a wasteful number, since it uses less digits than its factorization.

711643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30964.

The product of its digits is 504, while the sum is 22.

The square root of 711643 is about 843.5893550775. The cubic root of 711643 is about 89.2799751282.

The spelling of 711643 in words is "seven hundred eleven thousand, six hundred forty-three".