675281281 has 4 divisors (see below), whose sum is σ = 675536212. Its totient is φ = 675026352.

The previous prime is 675281279. The next prime is 675281297. The reversal of 675281281 is 182182576.

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 128142400 + 547138881 = 11320^2 + 23391^2 .

It is a cyclic number.

It is not a de Polignac number, because 675281281 - 2¹ = 675281279 is a prime.

It is a super-2 number, since 2×675281281² = 912009616938001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (675281251) 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, 123450 + ... + 128803.

It is an arithmetic number, because the mean of its divisors is an integer number (168884053).

Almost surely, 2^675281281 is an apocalyptic number.

It is an amenable number.

675281281 is a deficient number, since it is larger than the sum of its proper divisors (254931).

675281281 is a wasteful number, since it uses less digits than its factorization.

675281281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254930.

The product of its digits is 53760, while the sum is 40.

The square root of 675281281 is about 25986.1748050766. The cubic root of 675281281 is about 877.3271520439.

The spelling of 675281281 in words is "six hundred seventy-five million, two hundred eighty-one thousand, two hundred eighty-one".