667950059766 has 32 divisors (see below), whose sum is σ = 1496733308928. Its totient is φ = 196938591840.

The previous prime is 667950059741. The next prime is 667950059773.

667950059766 is nontrivially palindromic in base 10.

667950059766 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 667950059697 and 667950059706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136760470 + ... + 136765353.

It is an arithmetic number, because the mean of its divisors is an integer number (46772915904).

Almost surely, 2^667950059766 is an apocalyptic number.

667950059766 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

667950059766 is an abundant number, since it is smaller than the sum of its proper divisors (828783249162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667950059766 is a wasteful number, since it uses less digits than its factorization.

667950059766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273525876.

The product of its (nonzero) digits is 128595600, while the sum is 66.

The spelling of 667950059766 in words is "six hundred sixty-seven billion, nine hundred fifty million, fifty-nine thousand, seven hundred sixty-six".