6660402600 has 96 divisors (see below), whose sum is σ = 20684970720. Its totient is φ = 1772862720.

The previous prime is 6660402589. The next prime is 6660402641. The reversal of 6660402600 is 62040666.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327942 + ... + 347658.

It is an arithmetic number, because the mean of its divisors is an integer number (215468445).

Almost surely, 2^6660402600 is an apocalyptic number.

6660402600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6660402600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10342485360).

6660402600 is an abundant number, since it is smaller than the sum of its proper divisors (14024568120).

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

6660402600 is a wasteful number, since it uses less digits than its factorization.

6660402600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20299 (or 20290 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 6660402600 is about 81611.2896601935. The cubic root of 6660402600 is about 1881.4824017992.

The spelling of 6660402600 in words is "six billion, six hundred sixty million, four hundred two thousand, six hundred".