263606465 has 8 divisors (see below), whose sum is σ = 319460328. Its totient is φ = 208796800.

The previous prime is 263606459. The next prime is 263606467. The reversal of 263606465 is 564606362.

263606465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22363441 + 241243024 = 4729^2 + 15532^2 .

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

It is not a de Polignac number, because 263606465 - 2⁴ = 263606449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263606467) 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, 260492 + ... + 261501.

It is an arithmetic number, because the mean of its divisors is an integer number (39932541).

Almost surely, 2^263606465 is an apocalyptic number.

It is an amenable number.

263606465 is a deficient number, since it is larger than the sum of its proper divisors (55853863).

263606465 is a wasteful number, since it uses less digits than its factorization.

263606465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522099.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 263606465 is about 16235.9620903721. The cubic root of 263606465 is about 641.1879506577.

The spelling of 263606465 in words is "two hundred sixty-three million, six hundred six thousand, four hundred sixty-five".