261673413 has 8 divisors (see below), whose sum is σ = 349694400. Its totient is φ = 174050688.

The previous prime is 261673397. The next prime is 261673421. The reversal of 261673413 is 314376162.

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

It is not a de Polignac number, because 261673413 - 2⁴ = 261673397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261673463) 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, 98028 + ... + 100661.

It is an arithmetic number, because the mean of its divisors is an integer number (43711800).

Almost surely, 2^261673413 is an apocalyptic number.

It is an amenable number.

261673413 is a deficient number, since it is larger than the sum of its proper divisors (88020987).

261673413 is a wasteful number, since it uses less digits than its factorization.

261673413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199131.

The product of its digits is 18144, while the sum is 33.

The square root of 261673413 is about 16176.3226043499. The cubic root of 261673413 is about 639.6168059309.

The spelling of 261673413 in words is "two hundred sixty-one million, six hundred seventy-three thousand, four hundred thirteen".