663264453 has 4 divisors (see below), whose sum is σ = 884352608. Its totient is φ = 442176300.

The previous prime is 663264451. The next prime is 663264457. The reversal of 663264453 is 354462366.

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 not a de Polignac number, because 663264453 - 2¹ = 663264451 is a prime.

It is a super-2 number, since 2×663264453² = 879839469226778418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663264451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110544073 + ... + 110544078.

It is an arithmetic number, because the mean of its divisors is an integer number (221088152).

Almost surely, 2^663264453 is an apocalyptic number.

It is an amenable number.

663264453 is a deficient number, since it is larger than the sum of its proper divisors (221088155).

663264453 is a wasteful number, since it uses less digits than its factorization.

663264453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221088154.

The product of its digits is 311040, while the sum is 39.

The square root of 663264453 is about 25753.9211189287. The cubic root of 663264453 is about 872.0918759105.

The spelling of 663264453 in words is "six hundred sixty-three million, two hundred sixty-four thousand, four hundred fifty-three".