666670366737 has 24 divisors (see below), whose sum is σ = 1004998737600. Its totient is φ = 425054491488.

The previous prime is 666670366711. The next prime is 666670366753. The reversal of 666670366737 is 737663076666.

It is not a de Polignac number, because 666670366737 - 2¹⁵ = 666670333969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666670366757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1040814 + ... + 1554552.

It is an arithmetic number, because the mean of its divisors is an integer number (41874947400).

Almost surely, 2^666670366737 is an apocalyptic number.

It is an amenable number.

666670366737 is a deficient number, since it is larger than the sum of its proper divisors (338328370863).

666670366737 is a wasteful number, since it uses less digits than its factorization.

666670366737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520037 (or 520034 counting only the distinct ones).

The product of its (nonzero) digits is 144027072, while the sum is 63.

The spelling of 666670366737 in words is "six hundred sixty-six billion, six hundred seventy million, three hundred sixty-six thousand, seven hundred thirty-seven".