666736700734 has 16 divisors (see below), whose sum is σ = 1090012552272. Its totient is φ = 304017104448.

The previous prime is 666736700711. The next prime is 666736700753. The reversal of 666736700734 is 437007637666.

It is a super-2 number, since 2×666736700734² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154478079 + ... + 154482394.

It is an arithmetic number, because the mean of its divisors is an integer number (68125784517).

Almost surely, 2^666736700734 is an apocalyptic number.

666736700734 is a deficient number, since it is larger than the sum of its proper divisors (423275851538).

666736700734 is a wasteful number, since it uses less digits than its factorization.

666736700734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308960571.

The product of its (nonzero) digits is 16003008, while the sum is 55.

The spelling of 666736700734 in words is "six hundred sixty-six billion, seven hundred thirty-six million, seven hundred thousand, seven hundred thirty-four".