697869 has 8 divisors (see below), whose sum is σ = 1033920. Its totient is φ = 465228.

The previous prime is 697831. The next prime is 697877. The reversal of 697869 is 968796.

It is a de Polignac number, because none of the positive numbers 2^k-697869 is a prime.

It is a super-2 number, since 2×697869² = 974042282322, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 15.

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 697869.

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, 12897 + ... + 12950.

It is an arithmetic number, because the mean of its divisors is an integer number (129240).

2⁶⁹⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

697869 is a deficient number, since it is larger than the sum of its proper divisors (336051).

697869 is a wasteful number, since it uses less digits than its factorization.

697869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25856 (or 25850 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 697869 is about 835.3855397360. The cubic root of 697869 is about 88.7002074725.

The spelling of 697869 in words is "six hundred ninety-seven thousand, eight hundred sixty-nine".