263669797 has 2 divisors, whose sum is σ = 263669798. Its totient is φ = 263669796.

The previous prime is 263669773. The next prime is 263669831. The reversal of 263669797 is 797966362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167806116 + 95863681 = 12954^2 + 9791^2 .

It is a cyclic number.

It is not a de Polignac number, because 263669797 - 2¹¹ = 263667749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263669717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131834898 + 131834899.

It is an arithmetic number, because the mean of its divisors is an integer number (131834899).

Almost surely, 2^263669797 is an apocalyptic number.

It is an amenable number.

263669797 is a deficient number, since it is larger than the sum of its proper divisors (1).

263669797 is an equidigital number, since it uses as much as digits as its factorization.

263669797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 55.

The square root of 263669797 is about 16237.9123350263. The cubic root of 263669797 is about 641.2392954577.

It can be divided in two parts, 26366 and 9797, that added together give a palindrome (36163).

The spelling of 263669797 in words is "two hundred sixty-three million, six hundred sixty-nine thousand, seven hundred ninety-seven".