670617229 has 2 divisors, whose sum is σ = 670617230. Its totient is φ = 670617228.

The previous prime is 670617221. The next prime is 670617251. The reversal of 670617229 is 922716076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408242025 + 262375204 = 20205^2 + 16198^2 .

It is a cyclic number.

It is not a de Polignac number, because 670617229 - 2³ = 670617221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670617191 and 670617200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670617221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335308614 + 335308615.

It is an arithmetic number, because the mean of its divisors is an integer number (335308615).

Almost surely, 2^670617229 is an apocalyptic number.

It is an amenable number.

670617229 is a deficient number, since it is larger than the sum of its proper divisors (1).

670617229 is an equidigital number, since it uses as much as digits as its factorization.

670617229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 670617229 is about 25896.2782847266. The cubic root of 670617229 is about 875.3026344728.

The spelling of 670617229 in words is "six hundred seventy million, six hundred seventeen thousand, two hundred twenty-nine".