655450 has 12 divisors (see below), whose sum is σ = 1219230. Its totient is φ = 262160.

The previous prime is 655439. The next prime is 655453. The reversal of 655450 is 54556.

655450 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 3 ways, for example, as 450241 + 205209 = 671^2 + 453^2 .

It is a super-2 number, since 2×655450² = 859229405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (655453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6505 + ... + 6604.

2⁶⁵⁵⁴⁵⁰ is an apocalyptic number.

655450 is a deficient number, since it is larger than the sum of its proper divisors (563780).

655450 is a wasteful number, since it uses less digits than its factorization.

655450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13121 (or 13116 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 655450 is about 809.5986660068. The cubic root of 655450 is about 86.8653397467.

The spelling of 655450 in words is "six hundred fifty-five thousand, four hundred fifty".