261012846 has 8 divisors (see below), whose sum is σ = 522025704. Its totient is φ = 87004280.

The previous prime is 261012841. The next prime is 261012877. The reversal of 261012846 is 648210162.

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

261012846 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261012841) 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 3 ways as a sum of consecutive naturals, for example, 21751065 + ... + 21751076.

It is an arithmetic number, because the mean of its divisors is an integer number (65253213).

Almost surely, 2^261012846 is an apocalyptic number.

261012846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261012846 is a wasteful number, since it uses less digits than its factorization.

261012846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43502146.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 261012846 is about 16155.8919902307. The cubic root of 261012846 is about 639.0781372951.

The spelling of 261012846 in words is "two hundred sixty-one million, twelve thousand, eight hundred forty-six".