273653 has 2 divisors, whose sum is σ = 273654. Its totient is φ = 273652.

The previous prime is 273643. The next prime is 273697. The reversal of 273653 is 356372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268324 + 5329 = 518^2 + 73^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273653 is a prime.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136826 + 136827.

It is an arithmetic number, because the mean of its divisors is an integer number (136827).

2²⁷³⁶⁵³ is an apocalyptic number.

It is an amenable number.

273653 is a deficient number, since it is larger than the sum of its proper divisors (1).

273653 is an equidigital number, since it uses as much as digits as its factorization.

273653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 26.

The square root of 273653 is about 523.1185334128. The cubic root of 273653 is about 64.9232229573.

The spelling of 273653 in words is "two hundred seventy-three thousand, six hundred fifty-three".