667388883766 has 32 divisors (see below), whose sum is σ = 1106133696000. Its totient is φ = 299459328480.

The previous prime is 667388883757. The next prime is 667388883769.

667388883766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 667388883692 and 667388883701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667388883769) 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, 9424660 + ... + 9495208.

It is an arithmetic number, because the mean of its divisors is an integer number (34566678000).

Almost surely, 2^667388883766 is an apocalyptic number.

667388883766 is a deficient number, since it is larger than the sum of its proper divisors (438744812234).

667388883766 is a wasteful number, since it uses less digits than its factorization.

667388883766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76084.

The product of its digits is 2341011456, while the sum is 76.

The spelling of 667388883766 in words is "six hundred sixty-seven billion, three hundred eighty-eight million, eight hundred eighty-three thousand, seven hundred sixty-six".