670724533 has 2 divisors, whose sum is σ = 670724534. Its totient is φ = 670724532.

The previous prime is 670724513. The next prime is 670724539. The reversal of 670724533 is 335427076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667602244 + 3122289 = 25838^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 670724533 - 2¹⁷ = 670593461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670724492 and 670724501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670724539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335362266 + 335362267.

It is an arithmetic number, because the mean of its divisors is an integer number (335362267).

Almost surely, 2^670724533 is an apocalyptic number.

It is an amenable number.

670724533 is a deficient number, since it is larger than the sum of its proper divisors (1).

670724533 is an equidigital number, since it uses as much as digits as its factorization.

670724533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 37.

The square root of 670724533 is about 25898.3500053575. The cubic root of 670724533 is about 875.3493170715.

The spelling of 670724533 in words is "six hundred seventy million, seven hundred twenty-four thousand, five hundred thirty-three".