663347670453 has 90 divisors (see below), whose sum is σ = 1127127129282. Its totient is φ = 386436251520.

The previous prime is 663347670439. The next prime is 663347670493. The reversal of 663347670453 is 354076743366.

663347670453 is a `hidden beast` number, since 6 + 63 + 3 + 476 + 70 + 45 + 3 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 279738383409 + 383609287044 = 528903^2 + 619362^2 .

It is not a de Polignac number, because 663347670453 - 2¹⁶ = 663347604917 is a prime.

It is a super-3 number, since 3×663347670453³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 663347670453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663347670493) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 502155033 + ... + 502156353.

Almost surely, 2^663347670453 is an apocalyptic number.

It is an amenable number.

663347670453 is a deficient number, since it is larger than the sum of its proper divisors (463779458829).

663347670453 is an equidigital number, since it uses as much as digits as its factorization.

663347670453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 54.

The spelling of 663347670453 in words is "six hundred sixty-three billion, three hundred forty-seven million, six hundred seventy thousand, four hundred fifty-three".