6657260091 has 8 divisors (see below), whose sum is σ = 8904889344. Its totient is φ = 4423902120.

The previous prime is 6657260087. The next prime is 6657260107. The reversal of 6657260091 is 1900627566.

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

It is not a de Polignac number, because 6657260091 - 2² = 6657260087 is a prime.

It is a super-3 number, since 3×6657260091³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6657260041) by changing a digit.

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, 3566731 + ... + 3568596.

It is an arithmetic number, because the mean of its divisors is an integer number (1113111168).

Almost surely, 2^6657260091 is an apocalyptic number.

6657260091 is a deficient number, since it is larger than the sum of its proper divisors (2247629253).

6657260091 is a wasteful number, since it uses less digits than its factorization.

6657260091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7135641.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 6657260091 is about 81592.0344825400. The cubic root of 6657260091 is about 1881.1864484427.

The spelling of 6657260091 in words is "six billion, six hundred fifty-seven million, two hundred sixty thousand, ninety-one".