263223641 has 8 divisors (see below), whose sum is σ = 271848960. Its totient is φ = 254724448.

The previous prime is 263223593. The next prime is 263223673. The reversal of 263223641 is 146322362.

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 263223641 - 2¹⁸ = 262961497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263223241) 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, 27281 + ... + 35646.

It is an arithmetic number, because the mean of its divisors is an integer number (33981120).

Almost surely, 2^263223641 is an apocalyptic number.

It is an amenable number.

263223641 is a deficient number, since it is larger than the sum of its proper divisors (8625319).

263223641 is an equidigital number, since it uses as much as digits as its factorization.

263223641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63063.

The product of its digits is 10368, while the sum is 29.

The square root of 263223641 is about 16224.1684224493. The cubic root of 263223641 is about 640.8774106556.

The spelling of 263223641 in words is "two hundred sixty-three million, two hundred twenty-three thousand, six hundred forty-one".