261041654 has 8 divisors (see below), whose sum is σ = 391820880. Its totient is φ = 130434696.

The previous prime is 261041617. The next prime is 261041657. The reversal of 261041654 is 456140162.

261041654 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261041657) 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, 39209 + ... + 45380.

It is an arithmetic number, because the mean of its divisors is an integer number (48977610).

Almost surely, 2^261041654 is an apocalyptic number.

261041654 is a deficient number, since it is larger than the sum of its proper divisors (130779226).

261041654 is a wasteful number, since it uses less digits than its factorization.

261041654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86134.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 261041654 is about 16156.7835289082. The cubic root of 261041654 is about 639.1016481248.

The spelling of 261041654 in words is "two hundred sixty-one million, forty-one thousand, six hundred fifty-four".