667406740674 has 16 divisors (see below), whose sum is σ = 1335022809120. Its totient is φ = 222434025600.

The previous prime is 667406740673. The next prime is 667406740681. The reversal of 667406740674 is 476047604766.

It is not an unprimeable number, because it can be changed into a prime (667406740673) 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, 8680527 + ... + 8757074.

It is an arithmetic number, because the mean of its divisors is an integer number (83438925570).

Almost surely, 2^667406740674 is an apocalyptic number.

667406740674 is an abundant number, since it is smaller than the sum of its proper divisors (667616068446).

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

667406740674 is a wasteful number, since it uses less digits than its factorization.

667406740674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443985.

The product of its (nonzero) digits is 28449792, while the sum is 57.

The spelling of 667406740674 in words is "six hundred sixty-seven billion, four hundred six million, seven hundred forty thousand, six hundred seventy-four".