673666453 has 4 divisors (see below), whose sum is σ = 680207008. Its totient is φ = 667125900.

The previous prime is 673666447. The next prime is 673666459. The reversal of 673666453 is 354666376.

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 an interprime number because it is at equal distance from previous prime (673666447) and next prime (673666459).

It is a cyclic number.

It is not a de Polignac number, because 673666453 - 2¹³ = 673658261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673666459) 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, 3270123 + ... + 3270328.

It is an arithmetic number, because the mean of its divisors is an integer number (170051752).

Almost surely, 2^673666453 is an apocalyptic number.

It is an amenable number.

673666453 is a deficient number, since it is larger than the sum of its proper divisors (6540555).

673666453 is a wasteful number, since it uses less digits than its factorization.

673666453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6540554.

The product of its digits is 1632960, while the sum is 46.

The square root of 673666453 is about 25955.0853013432. The cubic root of 673666453 is about 876.6272643133.

The spelling of 673666453 in words is "six hundred seventy-three million, six hundred sixty-six thousand, four hundred fifty-three".