263770081 has 9 divisors (see below), whose sum is σ = 268010841. Its totient is φ = 259596144.

The previous prime is 263770057. The next prime is 263770121. The reversal of 263770081 is 180077362.

The square root of 263770081 is 16241.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 14130081 + 249640000 = 3759^2 + 15800^2 .

It is not a de Polignac number, because 263770081 - 2¹³ = 263761889 is a prime.

It is a super-2 number, since 2×263770081² = 139149311261493122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263770021) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1770195 + ... + 1770343.

Almost surely, 2^263770081 is an apocalyptic number.

263770081 is the 16241-st square number.

263770081 is the 8121-st centered octagonal number.

It is an amenable number.

263770081 is a deficient number, since it is larger than the sum of its proper divisors (4240760).

263770081 is an frugal number, since it uses more digits than its factorization.

263770081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The cubic root of 263770081 is about 641.3205813328.

The spelling of 263770081 in words is "two hundred sixty-three million, seven hundred seventy thousand, eighty-one".