3645561104 has 20 divisors (see below), whose sum is σ = 7072030620. Its totient is φ = 1820520960.

The previous prime is 3645561079. The next prime is 3645561121. The reversal of 3645561104 is 4011655463.

It can be written as a sum of positive squares in 2 ways, for example, as 1818169600 + 1827391504 = 42640^2 + 42748^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127877 + ... + 153764.

It is an arithmetic number, because the mean of its divisors is an integer number (353601531).

Almost surely, 2^3645561104 is an apocalyptic number.

It is an amenable number.

3645561104 is a deficient number, since it is larger than the sum of its proper divisors (3426469516).

3645561104 is a wasteful number, since it uses less digits than its factorization.

3645561104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282458 (or 282452 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 3645561104 is about 60378.4821273274. The cubic root of 3645561104 is about 1539.0573170390.

The spelling of 3645561104 in words is "three billion, six hundred forty-five million, five hundred sixty-one thousand, one hundred four".