654536 has 8 divisors (see below), whose sum is σ = 1227270. Its totient is φ = 327264.

The previous prime is 654529. The next prime is 654539. The reversal of 654536 is 635456.

654536 = T₂₇₈ + T₂₇₉ + ... + T₂₉₃.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 4900 = 806^2 + 70^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 654499 and 654508.

It is not an unprimeable number, because it can be changed into a prime (654539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40901 + ... + 40916.

2⁶⁵⁴⁵³⁶ is an apocalyptic number.

It is an amenable number.

654536 is a deficient number, since it is larger than the sum of its proper divisors (572734).

654536 is a wasteful number, since it uses less digits than its factorization.

654536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81823 (or 81819 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 654536 is about 809.0339918693. The cubic root of 654536 is about 86.8249441643.

The spelling of 654536 in words is "six hundred fifty-four thousand, five hundred thirty-six".