653801 has 2 divisors, whose sum is σ = 653802. Its totient is φ = 653800.

The previous prime is 653797. The next prime is 653819. The reversal of 653801 is 108356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 5776 = 805^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 653801 - 2² = 653797 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (653831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326900 + 326901.

It is an arithmetic number, because the mean of its divisors is an integer number (326901).

2⁶⁵³⁸⁰¹ is an apocalyptic number.

It is an amenable number.

653801 is a deficient number, since it is larger than the sum of its proper divisors (1).

653801 is an equidigital number, since it uses as much as digits as its factorization.

653801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 653801 is about 808.5796188379. The cubic root of 653801 is about 86.7924324633.

It can be divided in two parts, 6 and 53801, that multiplied together give a triangular number (322806 = T₈₀₃).

The spelling of 653801 in words is "six hundred fifty-three thousand, eight hundred one".