673651 has 8 divisors (see below), whose sum is σ = 751104. Its totient is φ = 598920.

The previous prime is 673649. The next prime is 673667. The reversal of 673651 is 156376.

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 673651 - 2¹ = 673649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (93888).

2⁶⁷³⁶⁵¹ is an apocalyptic number.

673651 is a deficient number, since it is larger than the sum of its proper divisors (77453).

673651 is a wasteful number, since it uses less digits than its factorization.

673651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its digits is 3780, while the sum is 28.

The square root of 673651 is about 820.7624504082. The cubic root of 673651 is about 87.6620561380.

The spelling of 673651 in words is "six hundred seventy-three thousand, six hundred fifty-one".