673428473 has 2 divisors, whose sum is σ = 673428474. Its totient is φ = 673428472.

The previous prime is 673428443. The next prime is 673428479. The reversal of 673428473 is 374824376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429194089 + 244234384 = 20717^2 + 15628^2 .

It is a cyclic number.

It is not a de Polignac number, because 673428473 - 2⁶ = 673428409 is a prime.

It is a super-2 number, since 2×673428473² = 907011816494223458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (673428479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336714236 + 336714237.

It is an arithmetic number, because the mean of its divisors is an integer number (336714237).

Almost surely, 2^673428473 is an apocalyptic number.

It is an amenable number.

673428473 is a deficient number, since it is larger than the sum of its proper divisors (1).

673428473 is an equidigital number, since it uses as much as digits as its factorization.

673428473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 44.

The square root of 673428473 is about 25950.5004383345. The cubic root of 673428473 is about 876.5240261178.

The spelling of 673428473 in words is "six hundred seventy-three million, four hundred twenty-eight thousand, four hundred seventy-three".