697770 has 24 divisors (see below), whose sum is σ = 1814436. Its totient is φ = 186048.

The previous prime is 697759. The next prime is 697787. The reversal of 697770 is 77796.

697770 is nontrivially palindromic in base 4 and base 16.

697770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 56169 = 801^2 + 237^2 .

It is an Ulam number.

It is a nialpdrome in base 15.

It is a zygodrome in base 4.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697770.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3787 + ... + 3966.

2⁶⁹⁷⁷⁷⁰ is an apocalyptic number.

697770 is an abundant number, since it is smaller than the sum of its proper divisors (1116666).

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

697770 is a wasteful number, since it uses less digits than its factorization.

697770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766 (or 7763 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 697770 is about 835.3262835563. The cubic root of 697770 is about 88.6960129242.

It can be divided in two parts, 69 and 7770, that multiplied together give a triangular number (536130 = T₁₀₃₅).

The spelling of 697770 in words is "six hundred ninety-seven thousand, seven hundred seventy".