267390961 has 2 divisors, whose sum is σ = 267390962. Its totient is φ = 267390960.

The previous prime is 267390953. The next prime is 267390979. The reversal of 267390961 is 169093762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145950561 + 121440400 = 12081^2 + 11020^2 .

It is a cyclic number.

It is not a de Polignac number, because 267390961 - 2³ = 267390953 is a prime.

It is not a weakly prime, because it can be changed into another prime (267390911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133695480 + 133695481.

It is an arithmetic number, because the mean of its divisors is an integer number (133695481).

Almost surely, 2^267390961 is an apocalyptic number.

It is an amenable number.

267390961 is a deficient number, since it is larger than the sum of its proper divisors (1).

267390961 is an equidigital number, since it uses as much as digits as its factorization.

267390961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 267390961 is about 16352.0934745371. The cubic root of 267390961 is about 644.2418116716.

The spelling of 267390961 in words is "two hundred sixty-seven million, three hundred ninety thousand, nine hundred sixty-one".