697969 has 4 divisors (see below), whose sum is σ = 739044. Its totient is φ = 656896.

The previous prime is 697967. The next prime is 697973. The reversal of 697969 is 969796.

697969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 288369 + 409600 = 537^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 697969 - 2¹ = 697967 is a prime.

It is a super-2 number, since 2×697969² = 974321449922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697967) 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, 20512 + ... + 20545.

It is an arithmetic number, because the mean of its divisors is an integer number (184761).

2⁶⁹⁷⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

697969 is a deficient number, since it is larger than the sum of its proper divisors (41075).

697969 is a wasteful number, since it uses less digits than its factorization.

697969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41074.

The product of its digits is 183708, while the sum is 46.

The square root of 697969 is about 835.4453901962. The cubic root of 697969 is about 88.7044439874.

The spelling of 697969 in words is "six hundred ninety-seven thousand, nine hundred sixty-nine".