261224267 has 8 divisors (see below), whose sum is σ = 263617200. Its totient is φ = 258840160.

The previous prime is 261224263. The next prime is 261224273. The reversal of 261224267 is 762422162.

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 261224267 - 2² = 261224263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261224263) 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, 66788 + ... + 70590.

It is an arithmetic number, because the mean of its divisors is an integer number (32952150).

Almost surely, 2^261224267 is an apocalyptic number.

261224267 is a deficient number, since it is larger than the sum of its proper divisors (2392933).

261224267 is a wasteful number, since it uses less digits than its factorization.

261224267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413.

The product of its digits is 16128, while the sum is 32.

The square root of 261224267 is about 16162.4338204368. The cubic root of 261224267 is about 639.2506423094.

The spelling of 261224267 in words is "two hundred sixty-one million, two hundred twenty-four thousand, two hundred sixty-seven".