654056 has 32 divisors (see below), whose sum is σ = 1394400. Its totient is φ = 285120.

The previous prime is 654053. The next prime is 654067. The reversal of 654056 is 650456.

It is a super-2 number, since 2×654056² = 855578502272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654056.

It is not an unprimeable number, because it can be changed into a prime (654053) 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, 1811 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (43575).

2⁶⁵⁴⁰⁵⁶ 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 654056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697200).

654056 is an abundant number, since it is smaller than the sum of its proper divisors (740344).

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

654056 is a wasteful number, since it uses less digits than its factorization.

654056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 654056 is about 808.7372873808. The cubic root of 654056 is about 86.8037147921.

Subtracting from 654056 its reverse (650456), we obtain a square (3600 = 60²).

The spelling of 654056 in words is "six hundred fifty-four thousand, fifty-six".