664775733361074 has 16 divisors (see below), whose sum is σ = 1331448116469120. Its totient is φ = 221275802829200.

The previous prime is 664775733361073. The next prime is 664775733361133. The reversal of 664775733361074 is 470163337577466.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (664775733361073) 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, 79027068234 + ... + 79027076645.

It is an arithmetic number, because the mean of its divisors is an integer number (83215507279320).

Almost surely, 2^{664775733361074} is an apocalyptic number.

664775733361074 is an abundant number, since it is smaller than the sum of its proper divisors (666672383108046).

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

664775733361074 is a wasteful number, since it uses less digits than its factorization.

664775733361074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158054145585.

The product of its (nonzero) digits is 1120210560, while the sum is 69.

The spelling of 664775733361074 in words is "six hundred sixty-four trillion, seven hundred seventy-five billion, seven hundred thirty-three million, three hundred sixty-one thousand, seventy-four".