675820917 has 12 divisors (see below), whose sum is σ = 999995724. Its totient is φ = 439558080.

The previous prime is 675820909. The next prime is 675820931. The reversal of 675820917 is 719028576.

675820917 is a `hidden beast` number, since 67 + 582 + 0 + 9 + 1 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 221235876 + 454585041 = 14874^2 + 21321^2 .

It is not a de Polignac number, because 675820917 - 2³ = 675820909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675820217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 915378 + ... + 916115.

It is an arithmetic number, because the mean of its divisors is an integer number (83332977).

Almost surely, 2^675820917 is an apocalyptic number.

It is an amenable number.

675820917 is a deficient number, since it is larger than the sum of its proper divisors (324174807).

675820917 is a wasteful number, since it uses less digits than its factorization.

675820917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831540 (or 1831537 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 675820917 is about 25996.5558680376. Note that the first 3 decimals coincide. The cubic root of 675820917 is about 877.5607886395.

The spelling of 675820917 in words is "six hundred seventy-five million, eight hundred twenty thousand, nine hundred seventeen".