267220961 has 12 divisors (see below), whose sum is σ = 320878080. Its totient is φ = 221656680.

The previous prime is 267220939. The next prime is 267221039. The reversal of 267220961 is 169022762.

It is not a de Polignac number, because 267220961 - 2¹⁰ = 267219937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (267220561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86441 + ... + 89478.

It is an arithmetic number, because the mean of its divisors is an integer number (26739840).

Almost surely, 2^267220961 is an apocalyptic number.

It is an amenable number.

267220961 is a deficient number, since it is larger than the sum of its proper divisors (53657119).

267220961 is a wasteful number, since it uses less digits than its factorization.

267220961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175964 (or 175957 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 267220961 is about 16346.8945368838. The cubic root of 267220961 is about 644.1052521733.

The spelling of 267220961 in words is "two hundred sixty-seven million, two hundred twenty thousand, nine hundred sixty-one".