670663061 has 2 divisors, whose sum is σ = 670663062. Its totient is φ = 670663060.

The previous prime is 670663051. The next prime is 670663079. The reversal of 670663061 is 160366076.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667240561 + 3422500 = 25831^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 670663061 - 2¹⁴ = 670646677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670663031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335331530 + 335331531.

It is an arithmetic number, because the mean of its divisors is an integer number (335331531).

Almost surely, 2^670663061 is an apocalyptic number.

It is an amenable number.

670663061 is a deficient number, since it is larger than the sum of its proper divisors (1).

670663061 is an equidigital number, since it uses as much as digits as its factorization.

670663061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 670663061 is about 25897.1631844108. The cubic root of 670663061 is about 875.3225742908.

The spelling of 670663061 in words is "six hundred seventy million, six hundred sixty-three thousand, sixty-one".