261334701 has 8 divisors (see below), whose sum is σ = 387162560. Its totient is φ = 174223116.

The previous prime is 261334687. The next prime is 261334729. The reversal of 261334701 is 107433162.

261334701 is a `hidden beast` number, since 2 + 613 + 3 + 47 + 0 + 1 = 666.

It is not a de Polignac number, because 261334701 - 2¹⁸ = 261072557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9679063 = 261334701 / (2 + 6 + 1 + 3 + 3 + 4 + 7 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261334771) 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 7 ways as a sum of consecutive naturals, for example, 4839505 + ... + 4839558.

It is an arithmetic number, because the mean of its divisors is an integer number (48395320).

Almost surely, 2^261334701 is an apocalyptic number.

It is an amenable number.

261334701 is a deficient number, since it is larger than the sum of its proper divisors (125827859).

261334701 is an equidigital number, since it uses as much as digits as its factorization.

261334701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679072 (or 9679066 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 261334701 is about 16165.8498384712. The cubic root of 261334701 is about 639.3407118634.

Adding to 261334701 its reverse (107433162), we get a palindrome (368767863).

The spelling of 261334701 in words is "two hundred sixty-one million, three hundred thirty-four thousand, seven hundred one".