264452645 has 8 divisors (see below), whose sum is σ = 317470104. Its totient is φ = 211477504.

The previous prime is 264452641. The next prime is 264452681. The reversal of 264452645 is 546254462.

It is a Cunningham number, because it is equal to 16262²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 264452644 = 1^2 + 16262^2 .

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 264452645 - 2² = 264452641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264452599 and 264452608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264452641) 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, 5357 + ... + 23613.

It is an arithmetic number, because the mean of its divisors is an integer number (39683763).

Almost surely, 2^264452645 is an apocalyptic number.

It is an amenable number.

264452645 is a deficient number, since it is larger than the sum of its proper divisors (53017459).

264452645 is a wasteful number, since it uses less digits than its factorization.

264452645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21159.

The product of its digits is 230400, while the sum is 38.

The square root of 264452645 is about 16262.0000307465. Note that the first 4 decimals coincide. The cubic root of 264452645 is about 641.8732916024.

The spelling of 264452645 in words is "two hundred sixty-four million, four hundred fifty-two thousand, six hundred forty-five".