264621516 has 12 divisors (see below), whose sum is σ = 617450232. Its totient is φ = 88207168.

The previous prime is 264621451. The next prime is 264621557. The reversal of 264621516 is 615126462.

264621516 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11025885 + ... + 11025908.

It is an arithmetic number, because the mean of its divisors is an integer number (51454186).

Almost surely, 2^264621516 is an apocalyptic number.

It is an amenable number.

264621516 is an abundant number, since it is smaller than the sum of its proper divisors (352828716).

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

264621516 is a wasteful number, since it uses less digits than its factorization.

264621516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22051800 (or 22051798 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 264621516 is about 16267.1913986404. The cubic root of 264621516 is about 642.0098891151.

Adding to 264621516 its reverse (615126462), we get a palindrome (879747978).

The spelling of 264621516 in words is "two hundred sixty-four million, six hundred twenty-one thousand, five hundred sixteen".