697830 has 32 divisors (see below), whose sum is σ = 1914624. Its totient is φ = 159456.

The previous prime is 697819. The next prime is 697831. The reversal of 697830 is 38796.

It is a happy number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 697791 and 697800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697831) by changing a digit.

697830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1452 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (59832).

2⁶⁹⁷⁸³⁰ is an apocalyptic number.

697830 is an abundant number, since it is smaller than the sum of its proper divisors (1216794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697830 is a wasteful number, since it uses less digits than its factorization.

697830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 697830 is about 835.3621968943. The cubic root of 697830 is about 88.6985551220.

The spelling of 697830 in words is "six hundred ninety-seven thousand, eight hundred thirty".