667212267822 has 16 divisors (see below), whose sum is σ = 1334445688272. Its totient is φ = 222400563840.

The previous prime is 667212267809. The next prime is 667212267829. The reversal of 667212267822 is 228762212766.

It is a happy number.

667212267822 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (667212267829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455473 + ... + 1241724.

It is an arithmetic number, because the mean of its divisors is an integer number (83402855517).

Almost surely, 2^667212267822 is an apocalyptic number.

667212267822 is an abundant number, since it is smaller than the sum of its proper divisors (667233420450).

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

667212267822 is a wasteful number, since it uses less digits than its factorization.

667212267822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762723.

The product of its digits is 2709504, while the sum is 51.

The spelling of 667212267822 in words is "six hundred sixty-seven billion, two hundred twelve million, two hundred sixty-seven thousand, eight hundred twenty-two".