670163237 has 2 divisors, whose sum is σ = 670163238. Its totient is φ = 670163236.

The previous prime is 670163189. The next prime is 670163243. The reversal of 670163237 is 732361076.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657871201 + 12292036 = 25649^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 670163237 - 2⁶ = 670163173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670163197 and 670163206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670163257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335081618 + 335081619.

It is an arithmetic number, because the mean of its divisors is an integer number (335081619).

Almost surely, 2^670163237 is an apocalyptic number.

It is an amenable number.

670163237 is a deficient number, since it is larger than the sum of its proper divisors (1).

670163237 is an equidigital number, since it uses as much as digits as its factorization.

670163237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 670163237 is about 25887.5112168010. The cubic root of 670163237 is about 875.1050701582.

The spelling of 670163237 in words is "six hundred seventy million, one hundred sixty-three thousand, two hundred thirty-seven".