670911061 has 2 divisors, whose sum is σ = 670911062. Its totient is φ = 670911060.

The previous prime is 670911053. The next prime is 670911067. The reversal of 670911061 is 160119076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444408561 + 226502500 = 21081^2 + 15050^2 .

It is a cyclic number.

It is not a de Polignac number, because 670911061 - 2³ = 670911053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670911067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335455530 + 335455531.

It is an arithmetic number, because the mean of its divisors is an integer number (335455531).

Almost surely, 2^670911061 is an apocalyptic number.

It is an amenable number.

670911061 is a deficient number, since it is larger than the sum of its proper divisors (1).

670911061 is an equidigital number, since it uses as much as digits as its factorization.

670911061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 670911061 is about 25901.9509110800. The cubic root of 670911061 is about 875.4304542179.

The spelling of 670911061 in words is "six hundred seventy million, nine hundred eleven thousand, sixty-one".