3666475780 has 96 divisors (see below), whose sum is σ = 8687347200. Its totient is φ = 1288097280.

The previous prime is 3666475751. The next prime is 3666475783. The reversal of 3666475780 is 875746663.

It is a happy number.

3666475780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-5 number, since 5×3666475780⁵ (a number of 49 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (3666475783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211349 + ... + 1214371.

It is an arithmetic number, because the mean of its divisors is an integer number (90493200).

Almost surely, 2^3666475780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3666475780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4343673600).

3666475780 is an abundant number, since it is smaller than the sum of its proper divisors (5020871420).

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

3666475780 is a wasteful number, since it uses less digits than its factorization.

3666475780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 52.

The square root of 3666475780 is about 60551.4308666608. The cubic root of 3666475780 is about 1541.9949100472.

The spelling of 3666475780 in words is "three billion, six hundred sixty-six million, four hundred seventy-five thousand, seven hundred eighty".