653816263 has 4 divisors (see below), whose sum is σ = 654091200. Its totient is φ = 653541328.

The previous prime is 653816231. The next prime is 653816269. The reversal of 653816263 is 362618356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 653816263 - 2⁵ = 653816231 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 (653816269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133870 + ... + 138667.

It is an arithmetic number, because the mean of its divisors is an integer number (163522800).

Almost surely, 2^653816263 is an apocalyptic number.

653816263 is a deficient number, since it is larger than the sum of its proper divisors (274937).

653816263 is a wasteful number, since it uses less digits than its factorization.

653816263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274936.

The product of its digits is 155520, while the sum is 40.

The square root of 653816263 is about 25569.8311101188. The cubic root of 653816263 is about 867.9310784856.

It can be divided in two parts, 6538 and 16263, that added together give a square (22801 = 151²).

The spelling of 653816263 in words is "six hundred fifty-three million, eight hundred sixteen thousand, two hundred sixty-three".