6615344340 has 72 divisors (see below), whose sum is σ = 21890782368. Its totient is φ = 1603719360.

The previous prime is 6615344321. The next prime is 6615344353. The reversal of 6615344340 is 434435166.

6615344340 is a `hidden beast` number, since 6 + 615 + 3 + 4 + 4 + 34 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6615344295 and 6615344304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1668562 + ... + 1672521.

It is an arithmetic number, because the mean of its divisors is an integer number (304038644).

Almost surely, 2^6615344340 is an apocalyptic number.

6615344340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6615344340 is an abundant number, since it is smaller than the sum of its proper divisors (15275438028).

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

6615344340 is a wasteful number, since it uses less digits than its factorization.

6615344340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341109 (or 3341104 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6615344340 is about 81334.7671048488. The cubic root of 6615344340 is about 1877.2299952798.

The spelling of 6615344340 in words is "six billion, six hundred fifteen million, three hundred forty-four thousand, three hundred forty".