697871 has 4 divisors (see below), whose sum is σ = 699792. Its totient is φ = 695952.

The previous prime is 697831. The next prime is 697877. The reversal of 697871 is 178796.

It is a happy number.

697871 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 is a cyclic number.

It is not a de Polignac number, because 697871 - 2¹⁴ = 681487 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 697871.

It is not an unprimeable number, because it can be changed into a prime (697877) 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, 230 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (174948).

2⁶⁹⁷⁸⁷¹ is an apocalyptic number.

697871 is a deficient number, since it is larger than the sum of its proper divisors (1921).

697871 is a wasteful number, since it uses less digits than its factorization.

697871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 21168, while the sum is 38.

The square root of 697871 is about 835.3867367872. The cubic root of 697871 is about 88.7002922068.

The spelling of 697871 in words is "six hundred ninety-seven thousand, eight hundred seventy-one".