611456 has 32 divisors (see below), whose sum is σ = 1294380. Its totient is φ = 286720.

The previous prime is 611453. The next prime is 611459. The reversal of 611456 is 654116.

It is an interprime number because it is at equal distance from previous prime (611453) and next prime (611459).

It can be written as a sum of positive squares in 2 ways, for example, as 577600 + 33856 = 760^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611453) 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, 2036 + ... + 2316.

2⁶¹¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647190).

611456 is an abundant number, since it is smaller than the sum of its proper divisors (682924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611456 is a wasteful number, since it uses less digits than its factorization.

611456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 300 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 611456 is about 781.9565205304. The cubic root of 611456 is about 84.8766839275.

The spelling of 611456 in words is "six hundred eleven thousand, four hundred fifty-six".