697243 has 4 divisors (see below), whose sum is σ = 733960. Its totient is φ = 660528.

The previous prime is 697217. The next prime is 697259. The reversal of 697243 is 342796.

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 697243 - 2⁵ = 697211 is a prime.

It is a super-2 number, since 2×697243² = 972295602098, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁶ + 9³ + 2⁹ + 7⁶ + 4⁴ + 3¹² .

It is a Duffinian number.

697243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (697643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18330 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (183490).

2⁶⁹⁷²⁴³ is an apocalyptic number.

697243 is a deficient number, since it is larger than the sum of its proper divisors (36717).

697243 is a wasteful number, since it uses less digits than its factorization.

697243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36716.

The product of its digits is 9072, while the sum is 31.

The square root of 697243 is about 835.0107783735. The cubic root of 697243 is about 88.6736776888.

The spelling of 697243 in words is "six hundred ninety-seven thousand, two hundred forty-three".