6615406875 has 80 divisors (see below), whose sum is σ = 13742201088. Its totient is φ = 2749200000.

The previous prime is 6615406849. The next prime is 6615406879. The reversal of 6615406875 is 5786045166.

It is not a de Polignac number, because 6615406875 - 2¹² = 6615402779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6615406879) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 121465 + ... + 167285.

Almost surely, 2^6615406875 is an apocalyptic number.

6615406875 is an abundant number, since it is smaller than the sum of its proper divisors (7126794213).

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

6615406875 is a wasteful number, since it uses less digits than its factorization.

6615406875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45862 (or 45847 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 6615406875 is about 81335.1515336389. The cubic root of 6615406875 is about 1877.2359104270.

The spelling of 6615406875 in words is "six billion, six hundred fifteen million, four hundred six thousand, eight hundred seventy-five".