6657743331 has 12 divisors (see below), whose sum is σ = 9656647000. Its totient is φ = 4420077120.

The previous prime is 6657743327. The next prime is 6657743341. The reversal of 6657743331 is 1333477566.

It is a happy number.

6657743331 is a `hidden beast` number, since 6 + 6 + 577 + 43 + 3 + 31 = 666.

It is not a de Polignac number, because 6657743331 - 2² = 6657743327 is a prime.

It is a super-2 number, since 2×6657743331² = 88651092522949951122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6657743321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1532581 + ... + 1536918.

Almost surely, 2^6657743331 is an apocalyptic number.

6657743331 is a deficient number, since it is larger than the sum of its proper divisors (2998903669).

6657743331 is a wasteful number, since it uses less digits than its factorization.

6657743331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069746 (or 3069743 counting only the distinct ones).

The product of its digits is 952560, while the sum is 45.

The square root of 6657743331 is about 81594.9957472883. The cubic root of 6657743331 is about 1881.2319647929.

The spelling of 6657743331 in words is "six billion, six hundred fifty-seven million, seven hundred forty-three thousand, three hundred thirty-one".