697405 has 8 divisors (see below), whose sum is σ = 845784. Its totient is φ = 552000.

The previous prime is 697399. The next prime is 697409. The reversal of 697405 is 504796.

697405 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 217156 + 480249 = 466^2 + 693^2 .

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

It is not a de Polignac number, because 697405 - 2³ = 697397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697405.

It is not an unprimeable number, because it can be changed into a prime (697409) 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, 186 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (105723).

2⁶⁹⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

697405 is a deficient number, since it is larger than the sum of its proper divisors (148379).

697405 is a wasteful number, since it uses less digits than its factorization.

697405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 697405 is about 835.1077774755. The cubic root of 697405 is about 88.6805447464.

The spelling of 697405 in words is "six hundred ninety-seven thousand, four hundred five".