53604666 has 40 divisors (see below), whose sum is σ = 120700404. Its totient is φ = 17781120.

The previous prime is 53604659. The next prime is 53604701. The reversal of 53604666 is 66640635.

It can be written as a sum of positive squares in 2 ways, for example, as 42575625 + 11029041 = 6525^2 + 3321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53604666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38356 + ... + 39728.

Almost surely, 2^53604666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53604666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60350202).

53604666 is an abundant number, since it is smaller than the sum of its proper divisors (67095738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53604666 is a wasteful number, since it uses less digits than its factorization.

53604666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 53604666 is about 7321.5207436707. The cubic root of 53604666 is about 377.0516666332.

The spelling of 53604666 in words is "fifty-three million, six hundred four thousand, six hundred sixty-six".