695838687109 has 8 divisors (see below), whose sum is σ = 736793812440. Its totient is φ = 654886166016.

The previous prime is 695838687101. The next prime is 695838687121. The reversal of 695838687109 is 901786838596.

695838687109 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 4 ways, for example, as 323681344900 + 372157342209 = 568930^2 + 610047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 695838687109 - 2³ = 695838687101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695838687101) 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, 86974 + ... + 1182895.

It is an arithmetic number, because the mean of its divisors is an integer number (92099226555).

Almost surely, 2^695838687109 is an apocalyptic number.

It is an amenable number.

695838687109 is a deficient number, since it is larger than the sum of its proper divisors (40955125331).

695838687109 is a wasteful number, since it uses less digits than its factorization.

695838687109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302119.

The product of its (nonzero) digits is 156764160, while the sum is 70.

The spelling of 695838687109 in words is "six hundred ninety-five billion, eight hundred thirty-eight million, six hundred eighty-seven thousand, one hundred nine".