667399340334 has 16 divisors (see below), whose sum is σ = 1357422387840. Its totient is φ = 218695828920.

The previous prime is 667399340297. The next prime is 667399340347. The reversal of 667399340334 is 433043993766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942654082 + ... + 942654789.

It is an arithmetic number, because the mean of its divisors is an integer number (84838899240).

Almost surely, 2^667399340334 is an apocalyptic number.

667399340334 is an abundant number, since it is smaller than the sum of its proper divisors (690023047506).

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

667399340334 is a wasteful number, since it uses less digits than its factorization.

667399340334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885308935.

The product of its (nonzero) digits is 26453952, while the sum is 57.

The spelling of 667399340334 in words is "six hundred sixty-seven billion, three hundred ninety-nine million, three hundred forty thousand, three hundred thirty-four".