654238271 has 4 divisors (see below), whose sum is σ = 670195344. Its totient is φ = 638281200.

The previous prime is 654238259. The next prime is 654238279. The reversal of 654238271 is 172832456.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654238271 - 2²² = 650043967 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 (654238279) 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, 7978475 + ... + 7978556.

It is an arithmetic number, because the mean of its divisors is an integer number (167548836).

Almost surely, 2^654238271 is an apocalyptic number.

654238271 is a deficient number, since it is larger than the sum of its proper divisors (15957073).

654238271 is a wasteful number, since it uses less digits than its factorization.

654238271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15957072.

The product of its digits is 80640, while the sum is 38.

The square root of 654238271 is about 25578.0818475506. The cubic root of 654238271 is about 868.1177747097.

The spelling of 654238271 in words is "six hundred fifty-four million, two hundred thirty-eight thousand, two hundred seventy-one".