263641036 has 12 divisors (see below), whose sum is σ = 485654680. Its totient is φ = 124882560.

The previous prime is 263641031. The next prime is 263641043. The reversal of 263641036 is 630146362.

It is a junction number, because it is equal to n+sod(n) for n = 263640989 and 263641007.

It is not an unprimeable number, because it can be changed into a prime (263641031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734405 + ... + 1734556.

Almost surely, 2^263641036 is an apocalyptic number.

It is an amenable number.

263641036 is a deficient number, since it is larger than the sum of its proper divisors (222013644).

263641036 is a wasteful number, since it uses less digits than its factorization.

263641036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468984 (or 3468982 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 263641036 is about 16237.0266982598. The cubic root of 263641036 is about 641.2159792314.

Adding to 263641036 its reverse (630146362), we get a palindrome (893787398).

The spelling of 263641036 in words is "two hundred sixty-three million, six hundred forty-one thousand, thirty-six".