664074578014 has 8 divisors (see below), whose sum is σ = 996129170640. Its totient is φ = 332031521136.

The previous prime is 664074578009. The next prime is 664074578017. The reversal of 664074578014 is 410875470466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664074578017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2738554 + ... + 2971165.

It is an arithmetic number, because the mean of its divisors is an integer number (124516146330).

Almost surely, 2^664074578014 is an apocalyptic number.

664074578014 is a deficient number, since it is larger than the sum of its proper divisors (332054592626).

664074578014 is a wasteful number, since it uses less digits than its factorization.

664074578014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767874.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 664074578014 in words is "six hundred sixty-four billion, seventy-four million, five hundred seventy-eight thousand, fourteen".