673370491 has 2 divisors, whose sum is σ = 673370492. Its totient is φ = 673370490.

The previous prime is 673370473. The next prime is 673370513. The reversal of 673370491 is 194073376.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673370491 is a prime.

It is not a weakly prime, because it can be changed into another prime (673370591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336685245 + 336685246.

It is an arithmetic number, because the mean of its divisors is an integer number (336685246).

Almost surely, 2^673370491 is an apocalyptic number.

673370491 is a deficient number, since it is larger than the sum of its proper divisors (1).

673370491 is an equidigital number, since it uses as much as digits as its factorization.

673370491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 673370491 is about 25949.3832489329. The cubic root of 673370491 is about 876.4988692393.

The spelling of 673370491 in words is "six hundred seventy-three million, three hundred seventy thousand, four hundred ninety-one".