263928667 has 2 divisors, whose sum is σ = 263928668. Its totient is φ = 263928666.

The previous prime is 263928649. The next prime is 263928671. The reversal of 263928667 is 766829362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263928667 - 2²³ = 255540059 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 263928667.

It is not a weakly prime, because it can be changed into another prime (263988667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131964333 + 131964334.

It is an arithmetic number, because the mean of its divisors is an integer number (131964334).

Almost surely, 2^263928667 is an apocalyptic number.

263928667 is a deficient number, since it is larger than the sum of its proper divisors (1).

263928667 is an equidigital number, since it uses as much as digits as its factorization.

263928667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 263928667 is about 16245.8815396395. The cubic root of 263928667 is about 641.4490822474.

The spelling of 263928667 in words is "two hundred sixty-three million, nine hundred twenty-eight thousand, six hundred sixty-seven".