261463727 has 8 divisors (see below), whose sum is σ = 300122400. Its totient is φ = 223131744.

The previous prime is 261463691. The next prime is 261463729. The reversal of 261463727 is 727364162.

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

It is a cyclic number.

It is not a de Polignac number, because 261463727 - 2¹² = 261459631 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 (261463729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79952 + ... + 83157.

It is an arithmetic number, because the mean of its divisors is an integer number (37515300).

Almost surely, 2^261463727 is an apocalyptic number.

261463727 is a deficient number, since it is larger than the sum of its proper divisors (38658673).

261463727 is a wasteful number, since it uses less digits than its factorization.

261463727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163345.

The product of its digits is 84672, while the sum is 38.

The square root of 261463727 is about 16169.8400424989. The cubic root of 261463727 is about 639.4459128467.

The spelling of 261463727 in words is "two hundred sixty-one million, four hundred sixty-three thousand, seven hundred twenty-seven".