697939 has 8 divisors (see below), whose sum is σ = 773568. Its totient is φ = 624360.

The previous prime is 697937. The next prime is 697951. The reversal of 697939 is 939796.

697939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 697939 - 2¹ = 697937 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 697895 and 697904.

It is not an unprimeable number, because it can be changed into a prime (697937) 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, 264 + ... + 1210.

It is an arithmetic number, because the mean of its divisors is an integer number (96696).

2⁶⁹⁷⁹³⁹ is an apocalyptic number.

697939 is a deficient number, since it is larger than the sum of its proper divisors (75629).

697939 is a wasteful number, since it uses less digits than its factorization.

697939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 91854, while the sum is 43.

The square root of 697939 is about 835.4274355083. The cubic root of 697939 is about 88.7031730754.

It can be divided in two parts, 69 and 7939, that added together give a palindrome (8008).

The spelling of 697939 in words is "six hundred ninety-seven thousand, nine hundred thirty-nine".