261006071 has 8 divisors (see below), whose sum is σ = 265758960. Its totient is φ = 256278528.

The previous prime is 261006043. The next prime is 261006091. The reversal of 261006071 is 170600162.

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 261006071 - 2¹⁸ = 260743927 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 (261006091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15095 + ... + 27383.

It is an arithmetic number, because the mean of its divisors is an integer number (33219870).

Almost surely, 2^261006071 is an apocalyptic number.

261006071 is a deficient number, since it is larger than the sum of its proper divisors (4752889).

261006071 is a wasteful number, since it uses less digits than its factorization.

261006071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 261006071 is about 16155.6823130439. The cubic root of 261006071 is about 639.0726078203.

The spelling of 261006071 in words is "two hundred sixty-one million, six thousand, seventy-one".