6690871267 has 16 divisors (see below), whose sum is σ = 7005491200. Its totient is φ = 6382696320.

The previous prime is 6690871259. The next prime is 6690871273. The reversal of 6690871267 is 7621780966.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6690871267 - 2³ = 6690871259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6690871207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1807963 + ... + 1811659.

It is an arithmetic number, because the mean of its divisors is an integer number (437843200).

Almost surely, 2^6690871267 is an apocalyptic number.

6690871267 is a deficient number, since it is larger than the sum of its proper divisors (314619933).

6690871267 is a wasteful number, since it uses less digits than its factorization.

6690871267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 6690871267 is about 81797.7460997551. The cubic root of 6690871267 is about 1884.3470468172.

The spelling of 6690871267 in words is "six billion, six hundred ninety million, eight hundred seventy-one thousand, two hundred sixty-seven".