3506421633 has 48 divisors (see below), whose sum is σ = 5813602560. Its totient is φ = 1858334400.

The previous prime is 3506421631. The next prime is 3506421637. The reversal of 3506421633 is 3361246053.

It is not a de Polignac number, because 3506421633 - 2¹ = 3506421631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 3506421594 and 3506421603.

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 47 ways as a sum of consecutive naturals, for example, 89418 + ... + 122508.

It is an arithmetic number, because the mean of its divisors is an integer number (121116720).

Almost surely, 2^3506421633 is an apocalyptic number.

3506421633 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3506421633 is a deficient number, since it is larger than the sum of its proper divisors (2307180927).

3506421633 is a wasteful number, since it uses less digits than its factorization.

3506421633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33150 (or 33137 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 3506421633 is about 59215.0456640878. The cubic root of 3506421633 is about 1519.2224833800. Note that the first 3 decimals are identical.

Adding to 3506421633 its reverse (3361246053), we get a palindrome (6867667686).

The spelling of 3506421633 in words is "three billion, five hundred six million, four hundred twenty-one thousand, six hundred thirty-three".