3506421635 has 4 divisors (see below), whose sum is σ = 4207705968. Its totient is φ = 2805137304.

The previous prime is 3506421631. The next prime is 3506421637. The reversal of 3506421635 is 5361246053.

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

It is a cyclic number.

It is not a de Polignac number, because 3506421635 - 2² = 3506421631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3506421595 and 3506421604.

It is not an unprimeable number, because it can be changed into a prime (3506421631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350642159 + ... + 350642168.

It is an arithmetic number, because the mean of its divisors is an integer number (1051926492).

Almost surely, 2^3506421635 is an apocalyptic number.

3506421635 is a deficient number, since it is larger than the sum of its proper divisors (701284333).

3506421635 is an equidigital number, since it uses as much as digits as its factorization.

3506421635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701284332.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 3506421635 is about 59215.0456809754. The cubic root of 3506421635 is about 1519.2224836689. Note that the first 3 decimals are identical.

Adding to 3506421635 its reverse (5361246053), we get a palindrome (8867667688).

The spelling of 3506421635 in words is "three billion, five hundred six million, four hundred twenty-one thousand, six hundred thirty-five".