666697576094 has 32 divisors (see below), whose sum is σ = 1100688158592. Its totient is φ = 300347892000.

The previous prime is 666697576087. The next prime is 666697576141. The reversal of 666697576094 is 490675796666.

It is a super-2 number, since 2×666697576094² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 2121164 + ... + 2415104.

It is an arithmetic number, because the mean of its divisors is an integer number (34396504956).

Almost surely, 2^666697576094 is an apocalyptic number.

666697576094 is a deficient number, since it is larger than the sum of its proper divisors (433990582498).

666697576094 is a wasteful number, since it uses less digits than its factorization.

666697576094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294872.

The product of its (nonzero) digits is 617258880, while the sum is 71.

The spelling of 666697576094 in words is "six hundred sixty-six billion, six hundred ninety-seven million, five hundred seventy-six thousand, ninety-four".