261613322 has 8 divisors (see below), whose sum is σ = 392520576. Its totient is φ = 130773132.

The previous prime is 261613301. The next prime is 261613397. The reversal of 261613322 is 223316162.

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

It is a junction number, because it is equal to n+sod(n) for n = 261613291 and 261613300.

It is an unprimeable number.

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, 5498 + ... + 23525.

It is an arithmetic number, because the mean of its divisors is an integer number (49065072).

Almost surely, 2^261613322 is an apocalyptic number.

261613322 is a deficient number, since it is larger than the sum of its proper divisors (130907254).

261613322 is a wasteful number, since it uses less digits than its factorization.

261613322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33532.

The product of its digits is 2592, while the sum is 26.

The square root of 261613322 is about 16174.4651225319. The cubic root of 261613322 is about 639.5678413895.

Adding to 261613322 its reverse (223316162), we get a palindrome (484929484).

The spelling of 261613322 in words is "two hundred sixty-one million, six hundred thirteen thousand, three hundred twenty-two".