6666762047 has 64 divisors (see below), whose sum is σ = 8095334400. Its totient is φ = 5470264800.

The previous prime is 6666762019. The next prime is 6666762049. The reversal of 6666762047 is 7402676666.

It is not a de Polignac number, because 6666762047 - 2¹⁴ = 6666745663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6666761986 and 6666762004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666762049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84389354 + ... + 84389432.

It is an arithmetic number, because the mean of its divisors is an integer number (126489600).

Almost surely, 2^6666762047 is an apocalyptic number.

6666762047 is a deficient number, since it is larger than the sum of its proper divisors (1428572353).

6666762047 is a wasteful number, since it uses less digits than its factorization.

6666762047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The square root of 6666762047 is about 81650.2421735539. The cubic root of 6666762047 is about 1882.0810333523.

The spelling of 6666762047 in words is "six billion, six hundred sixty-six million, seven hundred sixty-two thousand, forty-seven".