253681367 has 8 divisors (see below), whose sum is σ = 257595552. Its totient is φ = 249776800.

The previous prime is 253681333. The next prime is 253681387. The reversal of 253681367 is 763186352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253681367 - 2²⁰ = 252632791 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 (253681387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64913 + ... + 68709.

It is an arithmetic number, because the mean of its divisors is an integer number (32199444).

Almost surely, 2^253681367 is an apocalyptic number.

253681367 is a deficient number, since it is larger than the sum of its proper divisors (3914185).

253681367 is an equidigital number, since it uses as much as digits as its factorization.

253681367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809.

The product of its digits is 181440, while the sum is 41.

The square root of 253681367 is about 15927.3779072388. The cubic root of 253681367 is about 633.0376246180.

The spelling of 253681367 in words is "two hundred fifty-three million, six hundred eighty-one thousand, three hundred sixty-seven".