263564630 has 64 divisors (see below), whose sum is σ = 566438400. Its totient is φ = 88214112.

The previous prime is 263564627. The next prime is 263564641. The reversal of 263564630 is 36465362.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146597 + ... + 148383.

It is an arithmetic number, because the mean of its divisors is an integer number (8850600).

Almost surely, 2^263564630 is an apocalyptic number.

263564630 is an abundant number, since it is smaller than the sum of its proper divisors (302873770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263564630 is a wasteful number, since it uses less digits than its factorization.

263564630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 263564630 is about 16234.6736955197. The cubic root of 263564630 is about 641.1540294903.

The spelling of 263564630 in words is "two hundred sixty-three million, five hundred sixty-four thousand, six hundred thirty".