670733006261 has 4 divisors (see below), whose sum is σ = 671723749932. Its totient is φ = 669742262592.

The previous prime is 670733006243. The next prime is 670733006299. The reversal of 670733006261 is 162600337076.

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 483671566225 + 187061440036 = 695465^2 + 432506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670733006261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670733006761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495370820 + ... + 495372173.

It is an arithmetic number, because the mean of its divisors is an integer number (167930937483).

Almost surely, 2^670733006261 is an apocalyptic number.

It is an amenable number.

670733006261 is a deficient number, since it is larger than the sum of its proper divisors (990743671).

670733006261 is an equidigital number, since it uses as much as digits as its factorization.

670733006261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990743670.

The product of its (nonzero) digits is 190512, while the sum is 41.

The spelling of 670733006261 in words is "six hundred seventy billion, seven hundred thirty-three million, six thousand, two hundred sixty-one".