670553447 has 2 divisors, whose sum is σ = 670553448. Its totient is φ = 670553446.

The previous prime is 670553417. The next prime is 670553459. The reversal of 670553447 is 744355076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670553447 - 2⁶ = 670553383 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 (670553417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335276723 + 335276724.

It is an arithmetic number, because the mean of its divisors is an integer number (335276724).

Almost surely, 2^670553447 is an apocalyptic number.

670553447 is a deficient number, since it is larger than the sum of its proper divisors (1).

670553447 is an equidigital number, since it uses as much as digits as its factorization.

670553447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 41.

The square root of 670553447 is about 25895.0467657427. The cubic root of 670553447 is about 875.2748837579.

The spelling of 670553447 in words is "six hundred seventy million, five hundred fifty-three thousand, four hundred forty-seven".