681275253 has 8 divisors (see below), whose sum is σ = 913442400. Its totient is φ = 451645808.

The previous prime is 681275173. The next prime is 681275263. The reversal of 681275253 is 352572186.

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 681275253 - 2¹⁴ = 681258869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681275263) 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, 633798 + ... + 634871.

It is an arithmetic number, because the mean of its divisors is an integer number (114180300).

Almost surely, 2^681275253 is an apocalyptic number.

It is an amenable number.

681275253 is a deficient number, since it is larger than the sum of its proper divisors (232167147).

681275253 is a wasteful number, since it uses less digits than its factorization.

681275253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268851.

The product of its digits is 100800, while the sum is 39.

The square root of 681275253 is about 26101.2500275370. The cubic root of 681275253 is about 879.9153039182.

It can be divided in two parts, 681275 and 253, that added together give a triangular number (681528 = T₁₁₆₇).

The spelling of 681275253 in words is "six hundred eighty-one million, two hundred seventy-five thousand, two hundred fifty-three".