545634 has 12 divisors (see below), whose sum is σ = 1182246. Its totient is φ = 181872.

The previous prime is 545621. The next prime is 545641. The reversal of 545634 is 436545.

It can be written as a sum of positive squares in only one way, i.e., 356409 + 189225 = 597^2 + 435^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 545598 and 545607.

It is an unprimeable number.

545634 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15139 + ... + 15174.

2⁵⁴⁵⁶³⁴ is an apocalyptic number.

545634 is an abundant number, since it is smaller than the sum of its proper divisors (636612).

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

545634 is a wasteful number, since it uses less digits than its factorization.

545634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30321 (or 30318 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 545634 is about 738.6704271866. The cubic root of 545634 is about 81.7147534839.

The spelling of 545634 in words is "five hundred forty-five thousand, six hundred thirty-four".