3520689669 has 48 divisors (see below), whose sum is σ = 5911626240. Its totient is φ = 1977449760.

The previous prime is 3520689661. The next prime is 3520689673. The reversal of 3520689669 is 9669860253.

3520689669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3520689669 - 2³ = 3520689661 is a prime.

It is a super-2 number, since 2×3520689669² = 24790511490806659122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520689661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3625354 + ... + 3626324.

It is an arithmetic number, because the mean of its divisors is an integer number (123158880).

Almost surely, 2^3520689669 is an apocalyptic number.

It is an amenable number.

3520689669 is a deficient number, since it is larger than the sum of its proper divisors (2390936571).

3520689669 is a wasteful number, since it uses less digits than its factorization.

3520689669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The square root of 3520689669 is about 59335.3997964116. The cubic root of 3520689669 is about 1521.2803254844.

The spelling of 3520689669 in words is "three billion, five hundred twenty million, six hundred eighty-nine thousand, six hundred sixty-nine".