273664143 has 16 divisors (see below), whose sum is σ = 423056640. Its totient is φ = 174510072.

The previous prime is 273664133. The next prime is 273664159. The reversal of 273664143 is 341466372.

It is a happy number.

273664143 is a `hidden beast` number, since 2 + 7 + 3 + 6 + 641 + 4 + 3 = 666.

It is not a de Polignac number, because 273664143 - 2¹⁰ = 273663119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 273664098 and 273664107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273664103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219721 + ... + 220962.

It is an arithmetic number, because the mean of its divisors is an integer number (26441040).

Almost surely, 2^273664143 is an apocalyptic number.

273664143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

273664143 is a deficient number, since it is larger than the sum of its proper divisors (149392497).

273664143 is a wasteful number, since it uses less digits than its factorization.

273664143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440715 (or 440709 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 273664143 is about 16542.7973148437. The cubic root of 273664143 is about 649.2410415797.

The spelling of 273664143 in words is "two hundred seventy-three million, six hundred sixty-four thousand, one hundred forty-three".