667670574641 has 16 divisors (see below), whose sum is σ = 774995414400. Its totient is φ = 563387730048.

The previous prime is 667670574617. The next prime is 667670574647. The reversal of 667670574641 is 146475076766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667670574641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667670574647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2197295 + ... + 2482628.

It is an arithmetic number, because the mean of its divisors is an integer number (48437213400).

Almost surely, 2^667670574641 is an apocalyptic number.

It is an amenable number.

667670574641 is a deficient number, since it is larger than the sum of its proper divisors (107324839759).

667670574641 is a wasteful number, since it uses less digits than its factorization.

667670574641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680248.

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 667670574641 in words is "six hundred sixty-seven billion, six hundred seventy million, five hundred seventy-four thousand, six hundred forty-one".