261410005 has 8 divisors (see below), whose sum is σ = 320366592. Its totient is φ = 204678288.

The previous prime is 261409987. The next prime is 261410027. The reversal of 261410005 is 500014162.

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 261410005 - 2¹¹ = 261407957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555957 + ... + 556426.

It is an arithmetic number, because the mean of its divisors is an integer number (40045824).

Almost surely, 2^261410005 is an apocalyptic number.

It is an amenable number.

261410005 is a deficient number, since it is larger than the sum of its proper divisors (58956587).

261410005 is a wasteful number, since it uses less digits than its factorization.

261410005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112435.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 261410005 is about 16168.1787780813. The cubic root of 261410005 is about 639.4021149724.

Adding to 261410005 its reverse (500014162), we get a palindrome (761424167).

The spelling of 261410005 in words is "two hundred sixty-one million, four hundred ten thousand, five".