253693 has 4 divisors (see below), whose sum is σ = 276768. Its totient is φ = 230620.

The previous prime is 253681. The next prime is 253703. The reversal of 253693 is 396352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253693 - 2⁵ = 253661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11521 + ... + 11542.

It is an arithmetic number, because the mean of its divisors is an integer number (69192).

2²⁵³⁶⁹³ is an apocalyptic number.

It is an amenable number.

253693 is a deficient number, since it is larger than the sum of its proper divisors (23075).

253693 is a wasteful number, since it uses less digits than its factorization.

253693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23074.

The product of its digits is 4860, while the sum is 28.

The square root of 253693 is about 503.6794615626. The cubic root of 253693 is about 63.3047300817.

It can be divided in two parts, 253 and 693, that added together give a triangular number (946 = T₄₃).

The spelling of 253693 in words is "two hundred fifty-three thousand, six hundred ninety-three".