611281 has 8 divisors (see below), whose sum is σ = 678528. Its totient is φ = 546000.

The previous prime is 611279. The next prime is 611293. The reversal of 611281 is 182116.

611281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611281 - 2¹ = 611279 is a prime.

It is a super-2 number, since 2×611281² = 747328921922, 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 (611081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (84816).

2⁶¹¹²⁸¹ is an apocalyptic number.

611281 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

611281 is a deficient number, since it is larger than the sum of its proper divisors (67247).

611281 is a wasteful number, since it uses less digits than its factorization.

611281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its digits is 96, while the sum is 19.

The square root of 611281 is about 781.8446137181. The cubic root of 611281 is about 84.8685858594.

Adding to 611281 its reverse (182116), we get a palindrome (793397).

The spelling of 611281 in words is "six hundred eleven thousand, two hundred eighty-one".