674566537 has 2 divisors, whose sum is σ = 674566538. Its totient is φ = 674566536.

The previous prime is 674566523. The next prime is 674566559. The reversal of 674566537 is 735665476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361418121 + 313148416 = 19011^2 + 17696^2 .

It is a cyclic number.

It is not a de Polignac number, because 674566537 - 2¹⁹ = 674042249 is a prime.

It is not a weakly prime, because it can be changed into another prime (674566597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337283268 + 337283269.

It is an arithmetic number, because the mean of its divisors is an integer number (337283269).

Almost surely, 2^674566537 is an apocalyptic number.

It is an amenable number.

674566537 is a deficient number, since it is larger than the sum of its proper divisors (1).

674566537 is an equidigital number, since it uses as much as digits as its factorization.

674566537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 49.

The square root of 674566537 is about 25972.4187745385. The cubic root of 674566537 is about 877.0175103670.

The spelling of 674566537 in words is "six hundred seventy-four million, five hundred sixty-six thousand, five hundred thirty-seven".