697816 has 32 divisors (see below), whose sum is σ = 1585440. Its totient is φ = 281088.

The previous prime is 697787. The next prime is 697819. The reversal of 697816 is 618796.

697816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a congruent number.

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, 586 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (49545).

2⁶⁹⁷⁸¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792720).

697816 is an abundant number, since it is smaller than the sum of its proper divisors (887624).

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

697816 is a wasteful number, since it uses less digits than its factorization.

697816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 759 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 697816 is about 835.3538172535. The cubic root of 697816 is about 88.6979619556.

The spelling of 697816 in words is "six hundred ninety-seven thousand, eight hundred sixteen".