263145465 has 48 divisors (see below), whose sum is σ = 526870656. Its totient is φ = 120076800.

The previous prime is 263145451. The next prime is 263145469. The reversal of 263145465 is 564541362.

It is not a de Polignac number, because 263145465 - 2¹⁸ = 262883321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (263145469) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7221 + ... + 24050.

It is an arithmetic number, because the mean of its divisors is an integer number (10976472).

Almost surely, 2^263145465 is an apocalyptic number.

It is an amenable number.

263145465 is an abundant number, since it is smaller than the sum of its proper divisors (263725191).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263145465 is a wasteful number, since it uses less digits than its factorization.

263145465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310 (or 31307 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 263145465 is about 16221.7589983331. The cubic root of 263145465 is about 640.8139586634.

The spelling of 263145465 in words is "two hundred sixty-three million, one hundred forty-five thousand, four hundred sixty-five".