675560861 has 4 divisors (see below), whose sum is σ = 675716892. Its totient is φ = 675404832.

The previous prime is 675560839. The next prime is 675560867. The reversal of 675560861 is 168065576.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400200025 + 275360836 = 20005^2 + 16594^2 .

It is a cyclic number.

It is not a de Polignac number, because 675560861 - 2¹⁰ = 675559837 is a prime.

It is a super-2 number, since 2×675560861² = 912764953830122642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675560867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71330 + ... + 80243.

It is an arithmetic number, because the mean of its divisors is an integer number (168929223).

Almost surely, 2^675560861 is an apocalyptic number.

It is an amenable number.

675560861 is a deficient number, since it is larger than the sum of its proper divisors (156031).

675560861 is a wasteful number, since it uses less digits than its factorization.

675560861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156030.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 675560861 is about 25991.5536472909. The cubic root of 675560861 is about 877.4482123532.

The spelling of 675560861 in words is "six hundred seventy-five million, five hundred sixty thousand, eight hundred sixty-one".