697869685 has 4 divisors (see below), whose sum is σ = 837443628. Its totient is φ = 558295744.

The previous prime is 697869673. The next prime is 697869713. The reversal of 697869685 is 586968796.

697869685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73719396 + 624150289 = 8586^2 + 24983^2 .

It is a cyclic number.

It is not a de Polignac number, because 697869685 - 2¹¹ = 697867637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69786964 + ... + 69786973.

It is an arithmetic number, because the mean of its divisors is an integer number (209360907).

Almost surely, 2^697869685 is an apocalyptic number.

It is an amenable number.

697869685 is a deficient number, since it is larger than the sum of its proper divisors (139573943).

697869685 is a wasteful number, since it uses less digits than its factorization.

697869685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139573942.

The product of its digits is 39191040, while the sum is 64.

The square root of 697869685 is about 26417.2232643781. The cubic root of 697869685 is about 887.0023649403.

The spelling of 697869685 in words is "six hundred ninety-seven million, eight hundred sixty-nine thousand, six hundred eighty-five".