675061661 has 16 divisors (see below), whose sum is σ = 713439360. Its totient is φ = 638693440.

The previous prime is 675061637. The next prime is 675061693. The reversal of 675061661 is 166160576.

It is not a de Polignac number, because 675061661 - 2²² = 670867357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675061631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374626 + ... + 1375116.

It is an arithmetic number, because the mean of its divisors is an integer number (44589960).

Almost surely, 2^675061661 is an apocalyptic number.

It is an amenable number.

675061661 is a deficient number, since it is larger than the sum of its proper divisors (38377699).

675061661 is an equidigital number, since it uses as much as digits as its factorization.

675061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 675061661 is about 25981.9487529323. The cubic root of 675061661 is about 877.2320314443.

The spelling of 675061661 in words is "six hundred seventy-five million, sixty-one thousand, six hundred sixty-one".