667570361 has 2 divisors, whose sum is σ = 667570362. Its totient is φ = 667570360.

The previous prime is 667570333. The next prime is 667570369. The reversal of 667570361 is 163075766.

667570361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473497600 + 194072761 = 21760^2 + 13931^2 .

It is a cyclic number.

It is not a de Polignac number, because 667570361 - 2²⁶ = 600461497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667570369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333785180 + 333785181.

It is an arithmetic number, because the mean of its divisors is an integer number (333785181).

Almost surely, 2^667570361 is an apocalyptic number.

It is an amenable number.

667570361 is a deficient number, since it is larger than the sum of its proper divisors (1).

667570361 is an equidigital number, since it uses as much as digits as its factorization.

667570361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 667570361 is about 25837.3830137652. The cubic root of 667570361 is about 873.9750113730.

The spelling of 667570361 in words is "six hundred sixty-seven million, five hundred seventy thousand, three hundred sixty-one".