261326435 has 8 divisors (see below), whose sum is σ = 323707776. Its totient is φ = 202317120.

The previous prime is 261326423. The next prime is 261326447. The reversal of 261326435 is 534623162.

It is an interprime number because it is at equal distance from previous prime (261326423) and next prime (261326447).

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

It is not a de Polignac number, because 261326435 - 2⁴ = 261326419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842834 + ... + 843143.

It is an arithmetic number, because the mean of its divisors is an integer number (40463472).

Almost surely, 2^261326435 is an apocalyptic number.

261326435 is a deficient number, since it is larger than the sum of its proper divisors (62381341).

261326435 is a wasteful number, since it uses less digits than its factorization.

261326435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686013.

The product of its digits is 25920, while the sum is 32.

The square root of 261326435 is about 16165.5941740475. The cubic root of 261326435 is about 639.3339710236. Note that the first 3 decimals are identical.

Adding to 261326435 its reverse (534623162), we get a palindrome (795949597).

The spelling of 261326435 in words is "two hundred sixty-one million, three hundred twenty-six thousand, four hundred thirty-five".