453666644 has 12 divisors (see below), whose sum is σ = 808896564. Its totient is φ = 222553344.

The previous prime is 453666643. The next prime is 453666659. The reversal of 453666644 is 446666354.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 360544144 + 93122500 = 18988^2 + 9650^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 453666595 and 453666604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453666643) 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, 1069757 + ... + 1070180.

It is an arithmetic number, because the mean of its divisors is an integer number (67408047).

Almost surely, 2^453666644 is an apocalyptic number.

It is an amenable number.

453666644 is a deficient number, since it is larger than the sum of its proper divisors (355229920).

453666644 is a wasteful number, since it uses less digits than its factorization.

453666644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139994 (or 2139992 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The square root of 453666644 is about 21299.4517300329. The cubic root of 453666644 is about 768.3851263023.

The spelling of 453666644 in words is "four hundred fifty-three million, six hundred sixty-six thousand, six hundred forty-four".