667622674 has 16 divisors (see below), whose sum is σ = 1077727896. Its totient is φ = 309024000.

The previous prime is 667622671. The next prime is 667622693. The reversal of 667622674 is 476226766.

667622674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 422919225 + 244703449 = 20565^2 + 15643^2 .

It is not an unprimeable number, because it can be changed into a prime (667622671) 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, 158877 + ... + 163024.

Almost surely, 2^667622674 is an apocalyptic number.

667622674 is a deficient number, since it is larger than the sum of its proper divisors (410105222).

667622674 is a wasteful number, since it uses less digits than its factorization.

667622674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321981.

The product of its digits is 1016064, while the sum is 46.

The square root of 667622674 is about 25838.3953449126. The cubic root of 667622674 is about 873.9978399582.

The spelling of 667622674 in words is "six hundred sixty-seven million, six hundred twenty-two thousand, six hundred seventy-four".