667156622 has 16 divisors (see below), whose sum is σ = 1092870144. Its totient is φ = 302931000.

The previous prime is 667156621. The next prime is 667156631. The reversal of 667156622 is 226651766.

It is a self number, because there is not a number n which added to its sum of digits gives 667156622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667156621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5747 + ... + 36977.

It is an arithmetic number, because the mean of its divisors is an integer number (68304384).

Almost surely, 2^667156622 is an apocalyptic number.

667156622 is a deficient number, since it is larger than the sum of its proper divisors (425713522).

667156622 is a wasteful number, since it uses less digits than its factorization.

667156622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32215.

The product of its digits is 181440, while the sum is 41.

The square root of 667156622 is about 25829.3751763375. The cubic root of 667156622 is about 873.7944200345.

It can be divided in two parts, 66715 and 6622, that added together give a palindrome (73337).

The spelling of 667156622 in words is "six hundred sixty-seven million, one hundred fifty-six thousand, six hundred twenty-two".