261796270 has 8 divisors (see below), whose sum is σ = 471233304. Its totient is φ = 104718504.

The previous prime is 261796267. The next prime is 261796273. The reversal of 261796270 is 72697162.

It is an interprime number because it is at equal distance from previous prime (261796267) and next prime (261796273).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261796273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13089804 + ... + 13089823.

It is an arithmetic number, because the mean of its divisors is an integer number (58904163).

Almost surely, 2^261796270 is an apocalyptic number.

261796270 is a deficient number, since it is larger than the sum of its proper divisors (209437034).

261796270 is a wasteful number, since it uses less digits than its factorization.

261796270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26179634.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 261796270 is about 16180.1195916470. The cubic root of 261796270 is about 639.7168913849.

The spelling of 261796270 in words is "two hundred sixty-one million, seven hundred ninety-six thousand, two hundred seventy".