670955936161 has 9 divisors (see below), whose sum is σ = 780506432499. Its totient is φ = 575100173424.

The previous prime is 670955936153. The next prime is 670955936201. The reversal of 670955936161 is 161639559076.

The square root of 670955936161 is 819119.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 335084688225 + 335871247936 = 578865^2 + 579544^2 .

It is not a de Polignac number, because 670955936161 - 2³ = 670955936153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 670955936096 and 670955936105.

It is not an unprimeable number, because it can be changed into a prime (670955936561) 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 8 ways as a sum of consecutive naturals, for example, 5675325 + ... + 5792341.

Almost surely, 2^670955936161 is an apocalyptic number.

670955936161 is the 819119-th square number.

670955936161 is the 409560-th centered octagonal number.

It is an amenable number.

670955936161 is a deficient number, since it is larger than the sum of its proper divisors (109550496338).

670955936161 is an frugal number, since it uses more digits than its factorization.

670955936161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234048 (or 117024 counting only the distinct ones).

The product of its (nonzero) digits is 9185400, while the sum is 58.

The spelling of 670955936161 in words is "six hundred seventy billion, nine hundred fifty-five million, nine hundred thirty-six thousand, one hundred sixty-one".