6506671555 has 8 divisors (see below), whose sum is σ = 7824945744. Its totient is φ = 5194044000.

The previous prime is 6506671547. The next prime is 6506671583. The reversal of 6506671555 is 5551766056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6506671555 - 2³ = 6506671547 is a prime.

It is a super-2 number, since 2×6506671555² = 84673549449292236050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 1409121 + ... + 1413730.

It is an arithmetic number, because the mean of its divisors is an integer number (978118218).

Almost surely, 2^6506671555 is an apocalyptic number.

6506671555 is a deficient number, since it is larger than the sum of its proper divisors (1318274189).

6506671555 is a wasteful number, since it uses less digits than its factorization.

6506671555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823317.

The product of its (nonzero) digits is 945000, while the sum is 46.

The square root of 6506671555 is about 80663.9420993048. The cubic root of 6506671555 is about 1866.8938640162.

The spelling of 6506671555 in words is "six billion, five hundred six million, six hundred seventy-one thousand, five hundred fifty-five".