3604723906 has 12 divisors (see below), whose sum is σ = 6289875558. Its totient is φ = 1544881632.

The previous prime is 3604723901. The next prime is 3604723933. The reversal of 3604723906 is 6093274063.

It can be written as a sum of positive squares in only one way, i.e., 3405772881 + 198951025 = 58359^2 + 14105^2 .

It is not an unprimeable number, because it can be changed into a prime (3604723901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18391351 + ... + 18391546.

Almost surely, 2^3604723906 is an apocalyptic number.

3604723906 is a deficient number, since it is larger than the sum of its proper divisors (2685151652).

3604723906 is a wasteful number, since it uses less digits than its factorization.

3604723906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36782913 (or 36782906 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 3604723906 is about 60039.3529778594. The cubic root of 3604723906 is about 1533.2889372884.

Adding to 3604723906 its reverse (6093274063), we get a palindrome (9697997969).

The spelling of 3604723906 in words is "three billion, six hundred four million, seven hundred twenty-three thousand, nine hundred six".