264342505 has 24 divisors (see below), whose sum is σ = 369885312. Its totient is φ = 180829152.

The previous prime is 264342451. The next prime is 264342577. The reversal of 264342505 is 505243462.

It is not a de Polignac number, because 264342505 - 2¹¹ = 264340457 is a prime.

It is a super-3 number, since 3×264342505³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127104 + ... + 129166.

It is an arithmetic number, because the mean of its divisors is an integer number (15411888).

Almost surely, 2^264342505 is an apocalyptic number.

It is an amenable number.

264342505 is a deficient number, since it is larger than the sum of its proper divisors (105542807).

264342505 is a wasteful number, since it uses less digits than its factorization.

264342505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 264342505 is about 16258.6132557485. The cubic root of 264342505 is about 641.7841694823.

Adding to 264342505 its reverse (505243462), we get a palindrome (769585967).

The spelling of 264342505 in words is "two hundred sixty-four million, three hundred forty-two thousand, five hundred five".