3666510820 has 48 divisors (see below), whose sum is σ = 8815282560. Its totient is φ = 1254852864.

The previous prime is 3666510781. The next prime is 3666510821. The reversal of 3666510820 is 280156663.

It is a self number, because there is not a number n which added to its sum of digits gives 3666510820.

It is not an unprimeable number, because it can be changed into a prime (3666510821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56647 + ... + 102673.

It is an arithmetic number, because the mean of its divisors is an integer number (183651720).

Almost surely, 2^3666510820 is an apocalyptic number.

It is an amenable number.

3666510820 is an abundant number, since it is smaller than the sum of its proper divisors (5148771740).

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

3666510820 is a wasteful number, since it uses less digits than its factorization.

3666510820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46612 (or 46610 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 3666510820 is about 60551.7202067786. The cubic root of 3666510820 is about 1541.9998222419. Note that the first 3 decimals are identical.

The spelling of 3666510820 in words is "three billion, six hundred sixty-six million, five hundred ten thousand, eight hundred twenty".