697788 has 96 divisors (see below), whose sum is σ = 2257920. Its totient is φ = 181440.

The previous prime is 697787. The next prime is 697819. The reversal of 697788 is 887796.

Its product of digits (169344) is a multiple of the sum of its prime divisors (96).

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 697788.

It is not an unprimeable number, because it can be changed into a prime (697787) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9793 + ... + 9863.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2⁶⁹⁷⁷⁸⁸ 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 697788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128960).

697788 is an abundant number, since it is smaller than the sum of its proper divisors (1560132).

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

697788 is a wasteful number, since it uses less digits than its factorization.

697788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 96 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 697788 is about 835.3370577198. The cubic root of 697788 is about 88.6967755988.

It can be divided in two parts, 697 and 788, that added together give a triangular number (1485 = T₅₄).

The spelling of 697788 in words is "six hundred ninety-seven thousand, seven hundred eighty-eight".