261050667 has 8 divisors (see below), whose sum is σ = 363201024. Its totient is φ = 166467048.

The previous prime is 261050653. The next prime is 261050683. The reversal of 261050667 is 766050162.

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

It is not a de Polignac number, because 261050667 - 2²⁰ = 260002091 is a prime.

It is a super-2 number, since 2×261050667² = 136294901482289778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261050627) 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, 1891603 + ... + 1891740.

It is an arithmetic number, because the mean of its divisors is an integer number (45400128).

Almost surely, 2^261050667 is an apocalyptic number.

261050667 is a deficient number, since it is larger than the sum of its proper divisors (102150357).

261050667 is a wasteful number, since it uses less digits than its factorization.

261050667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783369.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 261050667 is about 16157.0624495915. The cubic root of 261050667 is about 639.1090034731.

The spelling of 261050667 in words is "two hundred sixty-one million, fifty thousand, six hundred sixty-seven".