6662309940 has 240 divisors, whose sum is σ = 24554597760. Its totient is φ = 1490814720.

The previous prime is 6662309917. The next prime is 6662309957. The reversal of 6662309940 is 499032666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 217281 + ... + 246039.

It is an arithmetic number, because the mean of its divisors is an integer number (102310824).

Almost surely, 2^6662309940 is an apocalyptic number.

6662309940 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 6662309940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12277298880).

6662309940 is an abundant number, since it is smaller than the sum of its proper divisors (17892287820).

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

6662309940 is a wasteful number, since it uses less digits than its factorization.

6662309940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28804 (or 28793 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 6662309940 is about 81622.9743393366. The cubic root of 6662309940 is about 1881.6619847441.

The spelling of 6662309940 in words is "six billion, six hundred sixty-two million, three hundred nine thousand, nine hundred forty".