670666736737 has 4 divisors (see below), whose sum is σ = 671152376596. Its totient is φ = 670181096880.

The previous prime is 670666736651. The next prime is 670666736741. The reversal of 670666736737 is 737637666076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 320949442576 + 349717294161 = 566524^2 + 591369^2 .

It is a cyclic number.

It is not a de Polignac number, because 670666736737 - 2¹⁹ = 670666212449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670666736137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242817858 + ... + 242820619.

It is an arithmetic number, because the mean of its divisors is an integer number (167788094149).

Almost surely, 2^670666736737 is an apocalyptic number.

It is an amenable number.

670666736737 is a deficient number, since it is larger than the sum of its proper divisors (485639859).

670666736737 is a wasteful number, since it uses less digits than its factorization.

670666736737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485639858.

The product of its (nonzero) digits is 168031584, while the sum is 64.

The spelling of 670666736737 in words is "six hundred seventy billion, six hundred sixty-six million, seven hundred thirty-six thousand, seven hundred thirty-seven".