675980657 has 24 divisors (see below), whose sum is σ = 761534592. Its totient is φ = 599417280.

The previous prime is 675980623. The next prime is 675980671. The reversal of 675980657 is 756089576.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-675980657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 675980599 and 675980608.

It is not an unprimeable number, because it can be changed into a prime (675980677) 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 23 ways as a sum of consecutive naturals, for example, 909428 + ... + 910170.

It is an arithmetic number, because the mean of its divisors is an integer number (31730608).

Almost surely, 2^675980657 is an apocalyptic number.

It is an amenable number.

675980657 is a deficient number, since it is larger than the sum of its proper divisors (85553935).

675980657 is a wasteful number, since it uses less digits than its factorization.

675980657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 53.

The square root of 675980657 is about 25999.6280165698. The cubic root of 675980657 is about 877.6299245667.

The spelling of 675980657 in words is "six hundred seventy-five million, nine hundred eighty thousand, six hundred fifty-seven".