271640297 has 8 divisors (see below), whose sum is σ = 287797536. Its totient is φ = 255502912.

The previous prime is 271640279. The next prime is 271640309. The reversal of 271640297 is 792046172.

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 271640297 - 2¹⁸ = 271378153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271640297.

It is not an unprimeable number, because it can be changed into a prime (271640267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30518 + ... + 38400.

It is an arithmetic number, because the mean of its divisors is an integer number (35974692).

Almost surely, 2^271640297 is an apocalyptic number.

It is an amenable number.

271640297 is a deficient number, since it is larger than the sum of its proper divisors (16157239).

271640297 is a wasteful number, since it uses less digits than its factorization.

271640297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 271640297 is about 16481.5137957652. The cubic root of 271640297 is about 647.6366219860.

The spelling of 271640297 in words is "two hundred seventy-one million, six hundred forty thousand, two hundred ninety-seven".