697543 has 8 divisors (see below), whose sum is σ = 869760. Its totient is φ = 543480.

The previous prime is 697523. The next prime is 697553. The reversal of 697543 is 345796.

697543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 697543 - 2⁵ = 697511 is a prime.

It is a Duffinian number.

697543 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 697499 and 697508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697513) 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, 4453 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (108720).

2⁶⁹⁷⁵⁴³ is an apocalyptic number.

697543 is a deficient number, since it is larger than the sum of its proper divisors (172217).

697543 is a wasteful number, since it uses less digits than its factorization.

697543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9077.

The product of its digits is 22680, while the sum is 34.

The square root of 697543 is about 835.1903974544. The cubic root of 697543 is about 88.6863936233.

It can be divided in two parts, 6975 and 43, that multiplied together give a triangular number (299925 = T₇₇₄).

The spelling of 697543 in words is "six hundred ninety-seven thousand, five hundred forty-three".