6665631026 has 8 divisors (see below), whose sum is σ = 10005428124. Its totient is φ = 3330488320.

The previous prime is 6665631001. The next prime is 6665631061. The reversal of 6665631026 is 6201365666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6659376025 + 6255001 = 81605^2 + 2501^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1160015 + ... + 1165746.

Almost surely, 2^6665631026 is an apocalyptic number.

6665631026 is a deficient number, since it is larger than the sum of its proper divisors (3339797098).

6665631026 is a wasteful number, since it uses less digits than its factorization.

6665631026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327196.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 6665631026 is about 81643.3158684776. The cubic root of 6665631026 is about 1881.9745951970.

The spelling of 6665631026 in words is "six billion, six hundred sixty-five million, six hundred thirty-one thousand, twenty-six".