670707700261 has 8 divisors (see below), whose sum is σ = 721803080664. Its totient is φ = 620905873920.

The previous prime is 670707700259. The next prime is 670707700309. The reversal of 670707700261 is 162007707076.

It can be written as a sum of positive squares in 4 ways, for example, as 118679236 + 670589021025 = 10894^2 + 818895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670707700261 - 2¹ = 670707700259 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 (670707700241) 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 7 ways as a sum of consecutive naturals, for example, 323387440 + ... + 323389513.

It is an arithmetic number, because the mean of its divisors is an integer number (90225385083).

Almost surely, 2^670707700261 is an apocalyptic number.

670707700261 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

670707700261 is a deficient number, since it is larger than the sum of its proper divisors (51095380403).

670707700261 is a wasteful number, since it uses less digits than its factorization.

670707700261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646777031.

The product of its (nonzero) digits is 172872, while the sum is 43.

The spelling of 670707700261 in words is "six hundred seventy billion, seven hundred seven million, seven hundred thousand, two hundred sixty-one".