264780653 has 4 divisors (see below), whose sum is σ = 265835808. Its totient is φ = 263725500.

The previous prime is 264780631. The next prime is 264780667. The reversal of 264780653 is 356087462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264780653 - 2¹⁰ = 264779629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264780653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264780673) by changing a digit.

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, 527201 + ... + 527702.

It is an arithmetic number, because the mean of its divisors is an integer number (66458952).

Almost surely, 2^264780653 is an apocalyptic number.

It is an amenable number.

264780653 is a deficient number, since it is larger than the sum of its proper divisors (1055155).

264780653 is a wasteful number, since it uses less digits than its factorization.

264780653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055154.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 264780653 is about 16272.0820118386. The cubic root of 264780653 is about 642.1385597484.

The spelling of 264780653 in words is "two hundred sixty-four million, seven hundred eighty thousand, six hundred fifty-three".