275007643 has 4 divisors (see below), whose sum is σ = 282440320. Its totient is φ = 267574968.

The previous prime is 275007617. The next prime is 275007671. The reversal of 275007643 is 346700572.

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 275007643 - 2²⁵ = 241453211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 275007599 and 275007608.

It is not an unprimeable number, because it can be changed into a prime (275007613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3716283 + ... + 3716356.

It is an arithmetic number, because the mean of its divisors is an integer number (70610080).

Almost surely, 2^275007643 is an apocalyptic number.

275007643 is a deficient number, since it is larger than the sum of its proper divisors (7432677).

275007643 is an equidigital number, since it uses as much as digits as its factorization.

275007643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432676.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 275007643 is about 16583.3543952965. The cubic root of 275007643 is about 650.3017478671.

The spelling of 275007643 in words is "two hundred seventy-five million, seven thousand, six hundred forty-three".