671727273 has 64 divisors (see below), whose sum is σ = 1149603840. Its totient is φ = 339628032.

The previous prime is 671727271. The next prime is 671727281. The reversal of 671727273 is 372727176.

It is not a de Polignac number, because 671727273 - 2¹ = 671727271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671727271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1132465 + ... + 1133057.

It is an arithmetic number, because the mean of its divisors is an integer number (17962560).

Almost surely, 2^671727273 is an apocalyptic number.

It is an amenable number.

671727273 is a deficient number, since it is larger than the sum of its proper divisors (477876567).

671727273 is a wasteful number, since it uses less digits than its factorization.

671727273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 172872, while the sum is 42.

The square root of 671727273 is about 25917.7019235888. The cubic root of 671727273 is about 875.7853185793.

The spelling of 671727273 in words is "six hundred seventy-one million, seven hundred twenty-seven thousand, two hundred seventy-three".