675664628 has 12 divisors (see below), whose sum is σ = 1182667332. Its totient is φ = 337759680.

The previous prime is 675664597. The next prime is 675664631. The reversal of 675664628 is 826466576.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 636451984 + 39212644 = 25228^2 + 6262^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6488 + ... + 37328.

It is an arithmetic number, because the mean of its divisors is an integer number (98555611).

Almost surely, 2^675664628 is an apocalyptic number.

It is an amenable number.

675664628 is a deficient number, since it is larger than the sum of its proper divisors (507002704).

675664628 is a wasteful number, since it uses less digits than its factorization.

675664628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36322 (or 36320 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 675664628 is about 25993.5497383486. The cubic root of 675664628 is about 877.4931357704.

The spelling of 675664628 in words is "six hundred seventy-five million, six hundred sixty-four thousand, six hundred twenty-eight".