263530073 has 8 divisors (see below), whose sum is σ = 282855528. Its totient is φ = 244629504.

The previous prime is 263530013. The next prime is 263530079. The reversal of 263530073 is 370035362.

It can be written as a sum of positive squares in 4 ways, for example, as 114982729 + 148547344 = 10723^2 + 12188^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 263530073 - 2⁶ = 263530009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263530079) 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, 104936 + ... + 107417.

It is an arithmetic number, because the mean of its divisors is an integer number (35356941).

Almost surely, 2^263530073 is an apocalyptic number.

It is an amenable number.

263530073 is a deficient number, since it is larger than the sum of its proper divisors (19325455).

263530073 is a wasteful number, since it uses less digits than its factorization.

263530073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212443.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 263530073 is about 16233.6093645252. The cubic root of 263530073 is about 641.1260068529.

It can be divided in two parts, 2635300 and 73, that multiplied together give a square (192376900 = 13870²).

The spelling of 263530073 in words is "two hundred sixty-three million, five hundred thirty thousand, seventy-three".