6667776249 has 16 divisors (see below), whose sum is σ = 9222501120. Its totient is φ = 4281863040.

The previous prime is 6667776239. The next prime is 6667776277. The reversal of 6667776249 is 9426777666.

It is a happy number.

6667776249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6667776249 - 2²³ = 6659387641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6667776192 and 6667776201.

It is not an unprimeable number, because it can be changed into a prime (6667776239) 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, 333382 + ... + 352815.

It is an arithmetic number, because the mean of its divisors is an integer number (576406320).

Almost surely, 2^6667776249 is an apocalyptic number.

It is an amenable number.

6667776249 is a deficient number, since it is larger than the sum of its proper divisors (2554724871).

6667776249 is a wasteful number, since it uses less digits than its factorization.

6667776249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686320.

The product of its digits is 32006016, while the sum is 60.

The square root of 6667776249 is about 81656.4525864307. The cubic root of 6667776249 is about 1882.1764676650.

The spelling of 6667776249 in words is "six billion, six hundred sixty-seven million, seven hundred seventy-six thousand, two hundred forty-nine".