263157663 has 8 divisors (see below), whose sum is σ = 350954800. Its totient is φ = 175399488.

The previous prime is 263157649. The next prime is 263157679. The reversal of 263157663 is 366751362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263157663 - 2⁸ = 263157407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263157613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15003 + ... + 27411.

It is an arithmetic number, because the mean of its divisors is an integer number (43869350).

Almost surely, 2^263157663 is an apocalyptic number.

263157663 is a deficient number, since it is larger than the sum of its proper divisors (87797137).

263157663 is a wasteful number, since it uses less digits than its factorization.

263157663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19481.

The product of its digits is 136080, while the sum is 39.

The square root of 263157663 is about 16222.1349704655. The cubic root of 263157663 is about 640.8238600664.

The spelling of 263157663 in words is "two hundred sixty-three million, one hundred fifty-seven thousand, six hundred sixty-three".