261467870 has 8 divisors (see below), whose sum is σ = 470642184. Its totient is φ = 104587144.

The previous prime is 261467851. The next prime is 261467893. The reversal of 261467870 is 78764162.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 13073384 + ... + 13073403.

It is an arithmetic number, because the mean of its divisors is an integer number (58830273).

Almost surely, 2^261467870 is an apocalyptic number.

261467870 is a deficient number, since it is larger than the sum of its proper divisors (209174314).

261467870 is a wasteful number, since it uses less digits than its factorization.

261467870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26146794.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 261467870 is about 16169.9681508654. The cubic root of 261467870 is about 639.4492902564.

The spelling of 261467870 in words is "two hundred sixty-one million, four hundred sixty-seven thousand, eight hundred seventy".