670220959 has 2 divisors, whose sum is σ = 670220960. Its totient is φ = 670220958.

The previous prime is 670220917. The next prime is 670220963. The reversal of 670220959 is 959022076.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670220959 - 2²⁷ = 536003231 is a prime.

It is a super-2 number, since 2×670220959² = 898392267765759362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670220909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335110479 + 335110480.

It is an arithmetic number, because the mean of its divisors is an integer number (335110480).

Almost surely, 2^670220959 is an apocalyptic number.

670220959 is a deficient number, since it is larger than the sum of its proper divisors (1).

670220959 is an equidigital number, since it uses as much as digits as its factorization.

670220959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 670220959 is about 25888.6260546982. The cubic root of 670220959 is about 875.1301940692.

The spelling of 670220959 in words is "six hundred seventy million, two hundred twenty thousand, nine hundred fifty-nine".