275697813 has 4 divisors (see below), whose sum is σ = 367597088. Its totient is φ = 183798540.

The previous prime is 275697791. The next prime is 275697839. The reversal of 275697813 is 318796572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 275697813 - 2⁶ = 275697749 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 (275697853) 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 3 ways as a sum of consecutive naturals, for example, 45949633 + ... + 45949638.

It is an arithmetic number, because the mean of its divisors is an integer number (91899272).

Almost surely, 2^275697813 is an apocalyptic number.

It is an amenable number.

275697813 is a deficient number, since it is larger than the sum of its proper divisors (91899275).

275697813 is an equidigital number, since it uses as much as digits as its factorization.

275697813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91899274.

The product of its digits is 635040, while the sum is 48.

The square root of 275697813 is about 16604.1504751071. The cubic root of 275697813 is about 650.8453010296.

The spelling of 275697813 in words is "two hundred seventy-five million, six hundred ninety-seven thousand, eight hundred thirteen".