664664072727074 has 32 divisors (see below), whose sum is σ = 1158838496640000. Its totient is φ = 280003289000400.

The previous prime is 664664072727059. The next prime is 664664072727101. The reversal of 664664072727074 is 470727270466466.

It is a super-2 number, since 2×664664072727074² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664664072726995 and 664664072727013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26069324 + ... + 44821175.

It is an arithmetic number, because the mean of its divisors is an integer number (36213703020000).

Almost surely, 2^{664664072727074} is an apocalyptic number.

664664072727074 is a deficient number, since it is larger than the sum of its proper divisors (494174423912926).

664664072727074 is a wasteful number, since it uses less digits than its factorization.

664664072727074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70901918.

The product of its (nonzero) digits is 796594176, while the sum is 68.

The spelling of 664664072727074 in words is "six hundred sixty-four trillion, six hundred sixty-four billion, seventy-two million, seven hundred twenty-seven thousand, seventy-four".