664454453 has 8 divisors (see below), whose sum is σ = 753228000. Its totient is φ = 581061168.

The previous prime is 664454419. The next prime is 664454459. The reversal of 664454453 is 354454466.

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 664454453 - 2⁶ = 664454389 is a prime.

It is a super-2 number, since 2×664454453² = 882999440223058418, which contains 22 as substring.

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 664454453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664454459) 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, 1344803 + ... + 1345296.

It is an arithmetic number, because the mean of its divisors is an integer number (94153500).

Almost surely, 2^664454453 is an apocalyptic number.

It is an amenable number.

664454453 is a deficient number, since it is larger than the sum of its proper divisors (88773547).

664454453 is a wasteful number, since it uses less digits than its factorization.

664454453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690131.

The product of its digits is 691200, while the sum is 41.

The square root of 664454453 is about 25777.0140435233. The cubic root of 664454453 is about 872.6131206385.

The spelling of 664454453 in words is "six hundred sixty-four million, four hundred fifty-four thousand, four hundred fifty-three".