6657260761 has 4 divisors (see below), whose sum is σ = 6657622272. Its totient is φ = 6656899252.

The previous prime is 6657260699. The next prime is 6657260867. The reversal of 6657260761 is 1670627566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1670627566 = 2 ⋅835313783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6657260761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6657260161) 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 3 ways as a sum of consecutive naturals, for example, 151561 + ... + 190486.

It is an arithmetic number, because the mean of its divisors is an integer number (1664405568).

Almost surely, 2^6657260761 is an apocalyptic number.

It is an amenable number.

6657260761 is a deficient number, since it is larger than the sum of its proper divisors (361511).

6657260761 is a wasteful number, since it uses less digits than its factorization.

6657260761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361510.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 6657260761 is about 81592.0385883329. The cubic root of 6657260761 is about 1881.1865115515.

The spelling of 6657260761 in words is "six billion, six hundred fifty-seven million, two hundred sixty thousand, seven hundred sixty-one".