653693 has 2 divisors, whose sum is σ = 653694. Its totient is φ = 653692.

The previous prime is 653687. The next prime is 653707. The reversal of 653693 is 396356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458329 + 195364 = 677^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 653693 - 2¹⁴ = 637309 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326846 + 326847.

It is an arithmetic number, because the mean of its divisors is an integer number (326847).

2⁶⁵³⁶⁹³ is an apocalyptic number.

It is an amenable number.

653693 is a deficient number, since it is larger than the sum of its proper divisors (1).

653693 is an equidigital number, since it uses as much as digits as its factorization.

653693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 32.

The square root of 653693 is about 808.5128323039. The cubic root of 653693 is about 86.7876531809.

The spelling of 653693 in words is "six hundred fifty-three thousand, six hundred ninety-three".