697889 has 8 divisors (see below), whose sum is σ = 767040. Its totient is φ = 632016.

The previous prime is 697877. The next prime is 697891. The reversal of 697889 is 988796.

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

It is not a de Polignac number, because 697889 - 2¹² = 693793 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (697819) 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, 362 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (95880).

2⁶⁹⁷⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

697889 is a deficient number, since it is larger than the sum of its proper divisors (69151).

697889 is a wasteful number, since it uses less digits than its factorization.

697889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639.

The product of its digits is 217728, while the sum is 47.

The square root of 697889 is about 835.3975101711. The cubic root of 697889 is about 88.7010548079.

The spelling of 697889 in words is "six hundred ninety-seven thousand, eight hundred eighty-nine".